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金沙国际静态财富文件自动削减并替换到压缩版本(大型网站优化技术)

2019年3月15日 - 金沙前端

静态财富文件自动削减并替换来压缩版本(大型网站优化技术)

2015/11/26 · HTML5 ·
静态能源

初稿出处: Kelly   

那三遍,笔者总括和享受一项大型网站优化技术,那正是在档次中自行削减静态财富文件(css、js),并让网站自动加载压缩后的财富文件。当然,那项技能在雅虎35条前端优化提议里也有记载,但它那只是给出一个争论的方案而已,并且使用的是表面压缩工具去收缩,而在自家的花色中,是直接通过祥和的程序自动化去收缩全数css、js文件,然后让页面向来加载所减弱后的资源,接下去直接进去正题。

此次试验应用的是PHP脚本语言,版本是PHP5.6,是在LINUX下搭建的条件(网上搭建无论是搭建LAMP依旧LNMP的学科都五花八门一无可取,下次小编会计算和享受如何在LINUX下搭建服务器环境的博文,而且搭建的环境必须三回性搭建成功的)。所选用的框架是CI框架,所利用的沙盘是斯马特y模板引擎。当然了,那几个只是笔者所运用的环境而已,假设你是PHP开发者,假设你要测试下此次试验,那么,作者建议你的PHP版本选取5.4之上,至于框架用什么样都是能够的。而只要你不是PHP开发者(你是JSP恐怕是ASP开发者可能是任何开发者),那么你理解好这一思路后,完全能够在协调深谙的言语里展开试验测试。

一、原理图

率先小编画一张思路图,便于大家先清楚。

首先是资源缩短原理图:

金沙国际 1

跟着是能源文件替换的原理图:

金沙国际 2

假设大家认真精通并且看懂那两张原理图的话,基本上也就控制了自个儿所享用的笔触。借使依旧不能够领略的话,接下去作者会结合代码,对以上原理图的每一步举行详尽讲解。

贰 、思路详细分析

1.先是是调用该滑坡的主意,你能够把该方法放在网站所要加载的公共类的地点,例如每便访问网站都会调用该滑坡方法进行削减。当然,那几个只是在付出条件才会每趟都调用,假诺是线上的环境,在您的网站发三遍新本子的时候,调用一次用来生成压缩版的静态能源就足以了。

class MY_Controller extends CI_Controller { public function
__construct() { parent::__construct(); //压缩jscss能源文件
$this->compressResHandle(); } /** * 压缩js、css能源文件(优化) *
@return [type] [description] */ private function
compressResHandle() { $this->load->library(‘ResMinifier’);
//压缩内定文件夹下的财富文件 $this->resminifier->compressRes(); }
}

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class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library(‘ResMinifier’);
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}

2.跟着就调用了 ResMinifier类里的 compressRes方法。在此处本身先附上
ResMinifier那些类的代码,然后方便一步步举行辨析教学

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
/** * 资源压缩类 */ class ResMinifier { /** 必要裁减的财富目录*/
public $compressResDir = [‘css’, ‘js’]; /**
忽略压缩的门道,例如此处是js/icon开始的路线忽略压缩*/ public
$compressResIngorePrefix = [‘js/icon’]; /** 能源根目录*/ public
$resRootDir; /** 能源版本文件路径*/ private $resStatePath; public
function __construct() { $this->resRootDir = WEBROOT . ‘www/’;
$this->resStatePath = WEBROOT . ‘www/resState.php’; } public function
compressRes() { //获取存放版本的财富文件 $resState =
$this->getResState(); $count = 0; //初阶遍历需求减小的资源目录
foreach ($this->compressResDir as $resDir) { foreach (new
RecursiveIteratorIterator(new
RecursiveDirectoryIterator($this->resRootDir . $resDir ,
FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的相对路径
$filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
//获取文件相对路径 $object = substr($filePath,
strlen($this->resRootDir)); //总计文件的本子号 $state =
$this->_getResStateVersion($filePath); //获取文件的多少个参数值 if
(true !== $this->getObjectInfo($object, $minObject, $needCompress,
$state, $extension)) { continue; } //压缩文件的绝对路径 $minFilePath =
str_replace(‘\\’, ‘/’, $this->resRootDir. $minObject);
//************此处p判断是最重庆大学片段之一*****************//
//判断文件是不是留存且早已转移过 if (isset($resState[$object]) &&
$resState[$object] == $state && isset($resState[$minObject]) &&
file_exists($minFilePath)) { continue; } //确认保证/www/min/目录可写
$this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress)
{ $this->compressResFileAndSave($filePath, $minFilePath); } else {
copy($filePath, $minFilePath); } $resState[$object] = $state;
$resState[$minObject] = ”; $count++; if ($count == 50) {
$this->_saveResState($resState); $count = 0; } } } if($count)
$this->_saveResState($resState); } public function
getObjectInfo($object, &$minObject, &$needCompress, &$state,
&$extension) { //获取财富相对路径 $file帕特h = $this->resRootDir .
$object; //判断资源是不是存在 if (!file_exists($filePath)) return
“能源文件不设有{$filePath}”; //版本号 $state = $this->
_getResStateVersion($filePath); //文件名后缀 $extension =
pathinfo($filePath, PATHINFO_EXTENSION); //是不是要压缩 $needCompress =
true; //判断能源文件是不是是以 .min.css或然.min.js结尾的
//此类结尾一般都是已回落过,例如jquery.min.js,就无需再压缩了 if
(str_end_with($object, ‘.min.’.$extension, true)) {
//压缩后的能源存放路径,放在 /www/min/ 目录下 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) .
$state .’.’. $extension; $needCompress = false; } else if
(in_array($extension, $this->compressResDir)) {
//此处是亟需收缩的文件目录 $minObject = ‘min/’.substr($object, 0,
strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
//看看是还是不是是忽略的不二法门前缀 foreach ($this->compressResIngorePrefix as
$v) { if (str_start_with($object, $v, true)) { $needCompress = false;
} } } else { $minObject = ‘min/’.$object; $needCompress = false; }
return true; } /** * 获取存放能源版本的文件 * 它是置身1个数组里 *
$resState = array( * ‘文件路径’ => ‘对应的版本号’, * ‘文件路径’
=> ‘对应的版本号’, * ‘文件路径’ => ‘对应的版本号’, * ); *
@return [type] [description] */ public function getResState() { if
(file_exists($this->resStatePath)) { require $this->resStatePath;
return $resState; } return []; } /** *
总计文件的版本号,这一个是根据估测计算文件MD5散列值获得版本号 *
只要文件内容变更了,所计算得到的散列值就会差异 *
用于判断能源文件是不是有改动过 * @param [type] $filePath
[description] * @return [type] [description] */ public function
_getResStateVersion($filePath) { return
base_convert(crc32(md5_file($filePath)), 10, 36); } /** *
确认保障目录可写 * @param [type] $dir [description] * @return [type]
[description] */ private function _ensureWritableDir($dir) { if
(!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); }
else if (!is_writable($dir)) { @chmod($dir, 0777); if
(!is_writable($dir)) { show_error(‘目录’.$dir.’不可写’); } } } /**
* 将压缩后的能源文件写入到/www/min/下去 * @param [type] $filePath
[description] * @param [type] $minFilePath [description] *
@return [type] [description] */ private function
compressResFileAndSave($filePath, $minFilePath) { if
(!file_put_contents($minFilePath,
$this->compressResFile($filePath))) {
//$CI->exceptions->show_exception(“写入文件{$minFilePath}失利”);
show_error(“写入文件{$minFilePath}退步”, -1); } } /** * 压缩能源文件
* @param [type] $filePath [description] * @return [type]
[description] */ private function compressResFile($filePath) {
$extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if
($extension === ‘js’) { require_once ‘JShrink/Minifier.php’; return
\JShrink\Minifier::minify(file_get_contents($filePath)); } else if
($extension ===’css’) { $content = file_get_contents($filePath);
$content =
preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”,
$content); $content = str_replace([“\r\n”, “\r”, “\n”], ”,
$content); $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’,
$content); $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’,
$content); $content = str_replace(‘;}’, ‘}’, $content); return
$content; } else {
//$CI->exceptions->show_exception(“不帮助压缩{extension}文件[$filePath]”);
show_error(“不协助压缩{extension}文件[$filePath]”, -1); } } private
function _saveResState($resState) { ksort($resState); $content =
“<?php\n\n\$resState = array(\n”; foreach ($resState as $k =>
$v) { $content .= “\t ‘$k’ => ‘$v’,\n”; } $content .= “);\n\n”;
file_put_contents($this->resStatePath, $content); } } 点击打开
能源压缩类

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = [‘css’, ‘js’];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = [‘js/icon’];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . ‘www/’;
        $this->resStatePath = WEBROOT . ‘www/resState.php’;
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace(‘\\’, ‘/’, $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = ”;
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, ‘.min.’.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) . $state .’.’. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = ‘min/’.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error(‘目录’.$dir.’不可写’);
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === ‘js’) {
            require_once ‘JShrink/Minifier.php’;
            return \JShrink\Minifier::minify(file_get_contents($filePath));
        } else if ($extension ===’css’) {
            $content = file_get_contents($filePath);
            $content = preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”, $content);
            $content = str_replace(["\r\n", "\r", "\n"], ”, $content);
            $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’, $content);
            $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’, $content);
            $content = str_replace(‘;}’, ‘}’, $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?php\n\n\$resState = array(\n";
        foreach ($resState as $k => $v) {
            $content .= "\t ‘$k’ => ‘$v’,\n";
        }
        $content .= ");\n\n";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开 资源压缩类

一体类大部分代码笔者都加了诠释,方便大家非常的慢驾驭。那里自个儿也会对每一行代码举行解释。

(1)

PHP

/** 需求减小的能源目录*/ public $compressResDir = [‘css’, ‘js’];
/** 忽略压缩的路径,例如此处是js/icon开端的门径忽略压缩*/ public
$compressResIngorePrefix = [‘js/icon’]; /** 财富根目录*/ public
$resRootDir; /** 财富版本文件路径*/ private $resStatePath; public
function __construct() { $this->resRootDir = WEBROOT . ‘www/’;
$this->resStatePath = WEBROOT . ‘www/resState.php’; }

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/** 需要压缩的资源目录*/
    public $compressResDir = [‘css’, ‘js’];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = [‘js/icon’];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . ‘www/’;
        $this->resStatePath = WEBROOT . ‘www/resState.php’;
    }

$compressResDir变量是亟需收缩的能源目录,假诺你有新的处理目录,可以在此变量里如若新的目录名即可处理。附上自个儿测试项指标目录图

金沙国际 3

$compressResIngorePrefix 忽略被缩减的不二法门的不二法门前有的是该数组变量的字符串,例如
有2个能源路径为
js/icon/bg.js或许是js/icon_index.js可能是js/icon.header.js,固然在该数组中到场了
js/icon那么些字符串,那么能源路径为js/icon开头的都会被忽略掉,也正是平昔跳过,不用压缩。(因为财富文件里总有一对是不必要减小的嘛)

$resRootDir存放财富根目录的

$resStatePath 那一个是财富版本文件路径

(2)进入compressRes() 方法,大家先分析后边这一段代码

PHP

public function compressRes() { //获取存放版本的财富文件 $resState =
$this->getResState(); $count = 0;

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public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;

——————————-调用getResState() 讲解start————————————————————-

此地首先是调用 $this->getResState() 方法来收获存放版本的财富文件,此处先跳到该办法看看是怎么写的,其实正是含有该文件,然后回到里面存放版本号的数组,大家看注释能够知道该文件里存放版本号的格式(顺便附上海教室让我们看看)

PHP

/** * 获取存放财富版本的文本 * 它是身处3个数组里 * $resState =
array( * ‘文件路径’ => ‘对应的本子号’, * ‘文件路径’ =>
‘对应的版本号’, * ‘文件路径’ => ‘对应的版本号’, * ); * @return
[type] [description] */ public function getResState() { if
(file_exists($this->resStatePath)) { require $this->resStatePath;
return $resState; } return []; }

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/**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }

(财富版本文件截图:)

金沙国际 4

——————————-调用getResState() 讲解end————————————————————-

紧接着看compressRes()里的这一段代码

PHP

//早先遍历供给减小的能源目录 foreach ($this->compressResDir as
$resDir) { foreach (new RecursiveIteratorIterator(new
RecursiveDirectoryIterator($this->resRootDir . $resDir ,
FilesystemIterator::SKIP_DOTS)) as $file) { //获取该资源文件的相对路径
$filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
//获取文件相对路径 $object = substr($filePath,
strlen($this->resRootDir)); //计算文件的版本号 $state =
$this->_getResStateVersion($filePath);

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//开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);

首先个遍历的是js和css目录
第②个遍历是将js目录可能css目录里的文书都变成路径情势,

比如说获取文件的相对路径 $filePath 的值是那样子的:

/usr/local/apache2/htdocs/project/www/css/home/index.css

而文件的相对路径$object是那样子的 :

css/home/index.css

那里就开始调用$this->_getResStateVersion($file帕特h)来总计文件的版本号

——————————-调用_getResStateVersion($filePath)
讲解start————————————————————

PHP

/** * 总计文件的本子号,那一个是依据总计文件MD5散列值得到版本号 *
只要文件内容改动了,所总括获得的散列值就会分裂 *
用于判断能源文件是不是有改观过 * @param [type] $filePath
[description] * @return [type] [description] */ public function
_getResStateVersion($filePath) { return
base_convert(crc32(md5_file($filePath)), 10, 36); }

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/**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }

——————————-调用_getResStateVersion($filePath)
讲解end————————————————————-

要么到版本号后,再看下一段代码,那里伊始调用$this->getObjectInfo()方法,那里收获到压缩文件的相对路径$minObject,是不是需求压缩$needCompress,版本号$state,文件后缀$extension。

PHP

//获取文件的多少个参数值 if (true !== $this->getObjectInfo($object,
$minObject, $needCompress, $state, $extension)) { continue; }

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//获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }

——————————调用$this->getObjectInfo() 讲解start————————————————————

PHP

/** * 获取能源文件有关新闻 * @param [type] $object 能源文件路径
(www/css/home/index.css) * @param [type] $minObject 压缩财富文件路径
(www/min/css/home/index.ae123a.css) * @param [type] $needCompress
是还是不是须求压缩 * @param [type] $state 文件版本号 * @param [type]
$extension 文件名后缀 * @return [type] [description] */ public
function getObjectInfo($object, &$minObject, &$needCompress, &$state,
&$extension) { //获取能源相对路径 $filePath = $this->resRootDir .
$object; //判断能源是或不是存在 if (!file_exists($filePath)) return
“能源文件不存在{$filePath}”; //版本号 $state = $this->
_getResStateVersion($filePath); //文件名后缀 $extension =
pathinfo($filePath, PATHINFO_EXTENSION); //是还是不是要收缩 $needCompress =
true; //判断能源文件是不是是以 .min.css或然.min.js结尾的
//此类结尾一般都以已压缩过,例如jquery.min.js,就不用再压缩了 if
(str_end_with($object, ‘.min.’.$extension, true)) {
//压缩后的能源存放路径,放在 /www/min/ 目录下 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) .
$state .’.’. $extension; $needCompress = false; } else if
(in_array($extension, $this->compressResDir)) {
//此处是要求减小的文件目录 $minObject = ‘min/’.substr($object, 0,
strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
//看看是或不是是忽略的路线前缀 foreach ($this->compressResIngorePrefix as
$v) { if (str_start_with($object, $v, true)) { $needCompress = false;
} } } else { $minObject = ‘min/’.$object; $needCompress = false; }
return true; }

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/**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, ‘.min.’.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) . $state .’.’. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = ‘min/’.$object;
            $needCompress = false;
        }
        return true;
    }

以此办法里的每一行代码基本上都有注释了,所以就不一句句进行讲解了,这里主要看上面包车型地铁论断部分:

if (str_end_with($object, ‘.min.’.$extension, true))
这一个判断是相比较能源文件路径字串后边部分是还是不是以 .min.$extension
结尾,例如是 jquery.min.js,那种文件本来就是
调整和收缩过的公文,所以就无须再进行压缩处理了, $minObject
那一个变量存放的是削减后的能源文件路径。
此间附上str_end_with()函数的代码:

PHP

/** * 判断 subject 是还是不是以 search结尾, 参数钦命是不是忽略大小写 *
@param [type] $subject [description] * @param [type] $search
[description] * @param boolean $ignore_case [description] *
@return [type] [description] */ function str_end_with($subject,
$search, $ignore_case = false) { $len2 = strlen($search); if (0 ===
$len2) return true; $len1 = strlen($subject); if ($len2 > $len1)
return false; if ($ignore_case) { return 0 === strcmp(substr($subject,
$len1 – $len2), $search); } else { return 0 ===
strcasecmp(substr($subject, $len1 – $len2), $search); } }

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/**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 – $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 – $len2), $search);
        }
    }

if
(in_array($extension, $this->compressResDir),那几个论断便是是还是不是是供给处理的多个目录里的。

接下来中间的foreach ($this->compressResIngorePrefix as $v) { if
(str_start_with($object, $v, true)) { $needCompress = false; } }

以此是判定是还是不是是以$this->compressResIngorePrefix属性定义的前尾部分字串起始的途径,是的话就忽略压缩该能源文件。

判定到最后else
正是阐明该财富文件不须要收缩了,最终是回到$minObject,$needCompress,$state,$extension那多个变量。

——————————-调用$this->getObjectInfo() 讲解end————————————————————-

到此处接二连三回到看 compressRes()方法里面包车型大巴代码

PHP

//压缩文件的绝对路径 $minFilePath = str_replace(‘\\’, ‘/’,
$this->resRootDir. $minObject);
//************此处p判断是最要紧片段之一*****************//
//判断文件是或不是留存且已经济体改变过 if (isset($resState[$object]) &&
$resState[$object] == $state && isset($resState[$minObject]) &&
file_exists($minFilePath)) { continue; }

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//压缩文件的绝对路径
                $minFilePath = str_replace(‘\\’, ‘/’, $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }

那段代码首先是拼接出压缩文件的相对路径,

继而下边这么些论断是重点的一部分,通过这一个判断就能够明白该财富文件是或不是被转移过,借使改变过的话,就再一次对该能源文件实行削减,假若没改变过,就持续处理下多个能源文件。看那里的判定:isset($resState[$object])
&& $resState[$object] == $state,这一个判断正是判断该文件路径是不是留存 
并且文件中对应的版本号和估测计算出的版本号是不是还一致;isset($resState[$minObject])
&&file_exists($minFile帕特h),这一个是判定压缩文件路径是不是留存,并且该压缩文件是不是真正存在目录中。

看下一段代码,假如能走到这一片段,表明当前的那一个能源文件是被改动过的(代码修改过),那么此时就对文件实行压缩操作了

PHP

//确定保障/www/min/目录可写
$this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress)
{ $this->compressResFileAndSave($filePath, $minFilePath); } else {
copy($filePath, $minFilePath); }

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//确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }

$this->_ensureWritableDir(),此方法是要保管新创建的www/min目录是可写的,那里附上代码:

——————————-调用$this->_ensureWritableDir() 讲解start————————————————————-

PHP

/** * 确定保证目录可写 * @param [type] $dir [description] * @return
[type] [description] */ private function _ensureWritableDir($dir)
{ if (!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir,
0777); } else if (!is_writable($dir)) { @chmod($dir, 0777); if
(!is_writable($dir)) { show_error(‘目录’.$dir.’不可写’); } } }

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/**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error(‘目录’.$dir.’不可写’);
            }
        }
    }

——————————-调用$this->_ensureWritableDir() 讲解end————————————————————-

if
($needCompress),这么些论断财富文件是还是不是供给收缩,需求的话调用$this->compressResFileAndSave($filePath,
$minFilePath);不供给的话,直接复制文件到压缩文件路径 copy($filePath,
$minFilePath);

先看$this->compressResFileAndSave()

——————————-调用$this->compressResFileAndSave()
讲解start————————————————————-

PHP

/** * 将压缩后的能源文件写入到/www/min/下去 * @param [type]
$filePath [description] * @param [type] $minFilePath
[description] * @return [type] [description] */ private function
compressResFileAndSave($filePath, $minFilePath) { if
(!file_put_contents($minFilePath,
$this->compressResFile($filePath))) {
//$CI->exceptions->show_exception(“写入文件{$minFilePath}失利”);
show_error(“写入文件{$minFilePath}战败”, -1); } } /** * 压缩财富文件
* @param [type] $filePath [description] * @return [type]
[description] */ private function compressResFile($filePath) {
$extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if
($extension === ‘js’) { require_once ‘JShrink/Minifier.php’; return
\JShrink\Minifier::minify(file_get_contents($filePath)); } else if
($extension ===’css’) { $content = file_get_contents($filePath);
$content =
preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”,
$content); $content = str_replace([“\r\n”, “\r”, “\n”], ”,
$content); $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’,
$content); $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’,
$content); $content = str_replace(‘;}’, ‘}’, $content); return
$content; } else {
//$CI->exceptions->show_exception(“不援救压缩{extension}文件[$filePath]”);
show_error(“不协理压缩{extension}文件[$filePath]”, -1); } }

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/**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === ‘js’) {
            require_once ‘JShrink/Minifier.php’;
            return \JShrink\Minifier::minify(file_get_contents($filePath));
        } else if ($extension ===’css’) {
            $content = file_get_contents($filePath);
            $content = preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”, $content);
            $content = str_replace(["\r\n", "\r", "\n"], ”, $content);
            $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’, $content);
            $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’, $content);
            $content = str_replace(‘;}’, ‘}’, $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }

先削减,再将削减后的故事情节写入到 压缩文件路径里去。

我们先看下这么些压缩方法:

$this->compressResFile($filePath);
此方法中分两类压缩,第三类时对js文件进行削减,第叁类的对css文件进行压缩。先说js压缩,那里是调用1个JShrink的类,它

二个用来压缩js文件的PHP类,百度得以找到,调用这一个类的minify()这一个主意就能够削减了;而css的回落利用正则替换到压缩,把这些空格换行什么的都去掉。到此就裁减成功

了,然后再将压缩后的能源写入到对应的压缩文件路径里去。

——————————-调用$this->compressResFileAndSave()
讲解end————————————————————-

紧接着继续看compressRes()那些办法里的代码,那里开首便是保存新的版本号到$resState数组里
$object=>$state,还有正是新的削减路径$minObject,而那边$count++的法力是,当那几个轮回四十九回就将
$resState这么些数组写入一遍到
resState.php文件里,那里是出于审慎考虑而已,借使你不加这么些$count的拍卖这某些也足以,最终写入贰遍就行了。

PHP

$resState[$object] = $state; $resState[$minObject] = ”; $count++;
if ($count == 50) { $this->_saveResState($resState); $count = 0; } }
} if($count) $this->_saveResState($resState);

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$resState[$object] = $state;
                $resState[$minObject] = ”;
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);

这里看$this->_saveResState($resState),那些主意正是将$resState数组写入到resState.php文件里去的艺术。

——————————-调用$this->_saveResState($resState)
讲解start————————————————————-

PHP

private function _saveResState($resState) { ksort($resState); $content
= “<?php\n\n\$resState = array(\n”; foreach ($resState as $k
=> $v) { $content .= “\t ‘$k’ => ‘$v’,\n”; } $content .=
“);\n\n”; file_put_contents($this->resStatePath, $content); }

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private function _saveResState($resState) {
        ksort($resState);
        $content = "<?php\n\n\$resState = array(\n";
        foreach ($resState as $k => $v) {
            $content .= "\t ‘$k’ => ‘$v’,\n";
        }
        $content .= ");\n\n";
        file_put_contents($this->resStatePath, $content);
    }

——————————-调用$this->_saveResState($resState)
讲解end————————————————————-

处理完后,看看所生成的文本,那里二个文本会有多少个本子,旧版本并未去除掉,在支付环境下删不删除都没难题,那里为啥不删除旧版本的压缩文件,那就事关到在立异多个应用服务器代码时所要注意的题材里。在此笔者就多讲解一点啊,不难地举个例子吗,一般大型项目中的静态财富和模板文件是布局在分裂的机器集群上的,上线的长河中,静态能源和页面文件的布置时间间隔只怕会相当长,对于1个巨型互连网应用来说正是在三个非常小的时日距离内,都有恐怕出现新用户访问,假设旧版本的静态能源删除了,但新本子的静态财富还没布置形成,那么用户就加载不到该静态财富,结果总之,所以,一般景况下大家会保留旧版本的静态财富,然后等有着片段布置到位了,再经过一定的台本删除掉也没涉及,其实,那一个不必删除也是足以的,你想想,1个类型发一遍版本,才会调用二次能源文件收缩方法,它只会对修改过的文本举行生成新版本号的静态文件而已。那么些就看个人的做法了。

金沙国际 5

咱俩得以打开看看,上边那个正是减掉后的文书的代码了,文件原大小为16K,压缩后大概少了5K,以往是11K,压缩比大约是2/3,就算在大型项目中,三个复杂点的页面会有极大的静态财富文件要加载,通过此办法,大大地增强了加载的快慢。(或者某个朋友认为压缩个几K恐怕十几K算什么,完全可以忽略,其实笔者想说的是,当您在大型项目中优化项目标时候,能够收缩几K的代码,也给网站的性质进步了一大截)

金沙国际 6

到此,能源裁减处理就分析完成了。其实,有必然基础的意中人,能够直接看笔者享受的不得了代码就足以了,即使领会不了,再看自己上边这一步步的辨析教学,笔者是高居能看过来此博客的情人,无论技术是好大概是稍弱,都能看懂,所以才对代码一步步地实行分析讲解。(希望各位多多帮助表哥)

————————————————————————————————————————-

  1. 接下去正是上课怎么着替换压缩后的能源文件了。

这个到Home.php

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
class Home extends MY_Controller { public function index() {
$this->smartyData[‘test’] = 111; //那几个暗中同意是加载
www/css/home/index.css文件 $this->addResLink(‘index.css’);
//那个默许是加载www/js/jquery.all.min.js文件
$this->addResLink(‘/jquery.all.min.js’);
//这一个暗中同意是加载www/js/index.js文件 $this->addResLink(‘index.js’);
$this->displayView(‘home/index.tpl’); } }

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData[‘test’] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink(‘index.css’);
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink(‘/jquery.all.min.js’);
        //这个默认是加载www/js/index.js文件
        $this->addResLink(‘index.js’);
        $this->displayView(‘home/index.tpl’);
    }
}

地方有加载四个能源文件,大家先看看$this->addResLink();那些方式,那几个形式放在My_Controller.php里:

PHP

/** * 财富路径 * @param [type] $filePath [description] */
protected function addResLink($filePath) { list($filePath, $query) =
explode(‘?’, $filePath . ‘?’); $extension =
strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); foreach
($this->_resLink as $v) { if (false === array_search($filePath,
$this->_resLink[$extension])) {
$this->_resLink[$extension][] = $query == null ? $filePath :
$filePath .’?’. $query; } } return $this; }

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/**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode(‘?’, $filePath . ‘?’);
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .’?’. $query;
            }
        }
 
        return $this;
    }

那里根本是判定了财富文件是css依旧js,然后将其存放在
$this->_resLink那性情子里。

那么那里小编就先附上My_Controller.php这几个父类的有着代码吧

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
class MY_Controller extends CI_Controller { public function
__construct() { parent::__construct(); //压缩jscss财富文件
$this->compressResHandle(); }
//==========================使用SMAGL450TY模板引擎================================//
/* 斯马特y母版页文件路径 */ protected $masterPage = ‘default.tpl’; /*
视图文件路径*/ protected $smartyView; /* 要赋值给smarty视图的多寡*/
protected $smartyData = []; /* 能源文件*/ protected $_resLink =
[‘js’=>[], ‘css’=>[]]; /** * 使用母版页输出贰个视图 *
@return [type] [description] */ protected function
displayView($viewName = null, $masterPage = null) { //为空则采纳暗中同意母版
if ($masterPage == null) $masterPage = $this->masterPage;
//获取视图的出口内容 $viewContent =
$this->_fetchView($this->smartyData, $viewName, $masterPage);
$output = ”; //添加css Link foreach ($this->_resLink[‘css’] as
$v) { $output .= res_link($v); } //内容部分 $output .= $viewContent;
//底部添加js 链接 foreach ($this->_resLink[‘js’] as $v) { $output
.= res_link($v); } //发送最终输出结果以及服务器的 HTTP 头到浏览器
$this->output->_display($output); return $output; } private
function _fetchView($smartyData, &$viewName, &$masterPage) { if
($viewName == null) $viewName = $this->smartyView; if
(empty($this->smarty)) { require_once
SMARTY_DI奇骏.’斯玛特y.class.php’; $this->smarty = new 斯Matty();
$this->smarty->setCompileDir(APPPATH . ‘cache/’);
$this->smarty->setCacheDir(APPPATH . ‘cache/’); }
//设置视图真实路径 $this->_getViewDir(true, $viewName, $masterPage,
$templateDir); foreach ($smartyData as $k => $v) {
$this->smarty->assign($k, $v); } if (empty($masterPage)) { return
$this->smarty->fetch($viewName); } else {
$this->smarty->assign(‘VIEW_MAIN’, $viewName); return
$this->smarty->fetch($masterPage); } } /** * 财富路径 * @param
[type] $filePath [description] */ protected function
addResLink($filePath) { list($filePath, $query) = explode(‘?’, $filePath
. ‘?’); $extension = strtolower(pathinfo($filePath,
PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false
=== array_search($filePath, $this->_resLink[$extension])) {
$this->_resLink[$extension][] = $query == null ? $filePath :
$filePath .’?’. $query; } } return $this; } private function
_getViewDir($setTemplateDir, &$viewName, &$masterPage = null,
&$templateDir) { if (‘/’ === $viewName[0]) $viewName =
substr($viewName, 1); //是不是采纳模板,有,则路由到
/views/master_page/*****.tpl下去 if ($masterPage) { $masterPage =
‘/’ === $masterPage[0] ? substr($masterPage, 1) : (‘master_page’
.’/’. $masterPage); } //是不是设置模板目录 if ($setTemplateDir) {
$templateDir = VIEWPATH;
$this->smarty->setTemplateDir($templateDir); } } /** *
压缩js、css财富文件(优化) * @return [type] [description] */
private function compressResHandle() {
$this->load->library(‘ResMinifier’); //压缩钦命文件夹下的能源文件
$this->resminifier->compressRes(); } } 点击打开 My_Controller.php

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = ‘default.tpl’;
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = [‘js’=>[], ‘css’=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = ”;
 
        //添加css Link
        foreach ($this->_resLink[‘css’] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink[‘js’] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.’Smarty.class.php’;
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . ‘cache/’);
            $this->smarty->setCacheDir(APPPATH . ‘cache/’);
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign(‘VIEW_MAIN’, $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode(‘?’, $filePath . ‘?’);
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .’?’. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if (‘/’ === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = ‘/’ === $masterPage[0] ? substr($masterPage, 1) : (‘master_page’ .’/’. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library(‘ResMinifier’);
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开 My_Controller.php

打字与印刷出来 $this->_resLink这几个天性的协会是那样子的:

PHP

Array ( [js] => Array ( [0] => /jquery.all.min.js [1] =>
index.js ) [css] => Array ( [0] => index.css ) )

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Array
(
    [js] => Array
        (
            [0] => /jquery.all.min.js
            [1] => index.js
        )
 
    [css] => Array
        (
            [0] => index.css
        )
 
)

再回到Home.php里面调用 $this->displayView(‘home/index.tpl’);

我们看那一个措施:

PHP

/** * 使用母版页输出一个视图 * @return [type] [description] */
protected function displayView($viewName = null, $masterPage = null) {
//为空则选拔私下认可母版 if ($masterPage == null) $masterPage =
$this->masterPage; //获取视图的输出内容 $viewContent =
$this->_fetchView($this->smartyData, $viewName, $masterPage);
$output = ”; //添加css Link foreach ($this->_resLink[‘css’] as
$v) { $output .= res_link($v); } //内容部分 $output .= $viewContent;
//底部添加js 链接 foreach ($this->_resLink[‘js’] as $v) { $output
.= res_link($v); } //发送最后输出结果以及服务器的 HTTP 头到浏览器
$this->output->_display($output); return $output; } private
function _fetchView($smartyData, &$viewName, &$masterPage) { if
($viewName == null) $viewName = $this->smartyView; if
(empty($this->smarty)) { require_once
SMARTY_DIRubicon.’Smarty.class.php’; $this->smarty = new 斯马特y();
$this->smarty->setCompileDir(APPPATH . ‘cache/’);
$this->smarty->setCacheDir(APPPATH . ‘cache/’); }
//设置视图真实路径 $this->_getViewDir(true, $viewName, $masterPage,
$templateDir); foreach ($smartyData as $k => $v) {
$this->smarty->assign($k, $v); } if (empty($masterPage)) { return
$this->smarty->fetch($viewName); } else {
$this->smarty->assign(‘VIEW_MAIN’, $viewName); return
$this->smarty->fetch($masterPage); } }

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/**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = ”;
 
        //添加css Link
        foreach ($this->_resLink[‘css’] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink[‘js’] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.’Smarty.class.php’;
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . ‘cache/’);
            $this->smarty->setCacheDir(APPPATH . ‘cache/’);
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign(‘VIEW_MAIN’, $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }

这一段代码没有一部分就是调用了Smarty模板引擎的剧情,那个关于斯马特y的学问作者就不讲了,我们能够团结百度,那里关键讲
res_link()
这些函数,正是经过那些函数来开始展览能源文件替换的。先看那个函数的代码:

PHP

/** * 输出 HttpHead 中的能源总是。 css/js 自动判断真实路径 * @param
string 文件路径 * @return string */ function res_link($file) { $file
= res_path($file, $extension); if ($extension === ‘css’) { return
‘<link rel=”stylesheet” type=”text/css” href=”‘ . $file . ‘”/>’; }
else if ($extension === ‘js’) { return ‘<script
type=”text/javascript” src=”‘.$file.'”></script>’; } else {
return false; } }

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/**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === ‘css’) {
           return ‘<link rel="stylesheet" type="text/css" href="’ . $file . ‘"/>’;
        } else if ($extension === ‘js’) {
            return ‘<script type="text/javascript" src="’.$file.’"></script>’;
        } else {
            return false;
        }
    }

此地最重点就是 res_path() 函数了,这么些函数能自动路由财富的诚实路径
。例如:index.css = > css/home/index.css

该函数最重点的一个功用是替换能源的削减版本。

直接看代码:

PHP

/** * 智能路由财富实际路径 * @param string 路径 * @param string
扩展名 * @return string 真实路径 */ function res_path($file,
&$extension) { //检查是不是留存询问字符串 list($file, $query) =
explode(‘?’, $file . ‘?’); //取得扩张名 $extension =
strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file =
str_replace(‘\\’, ‘/’, $file); //取安妥前控制器名 global $class; if
($class == null) exit(‘can not get class name’); $className =
strtolower($class); //此处的条条框框是那般: //例如,假若不加 /
,Home控制器对应的格式是: index.css,那么
此处的路径会变成css/home/index.css //假使有 / ,控制器的格式能够是
/main.css,那么那里的路径会变成 css/main.css(公用的css类) if (‘/’ !==
$file[0]) { //index.css => css/home/index.css $object = $extension
.’/’. $className .’/’ . $file; } else { // /css/main.css 只怕 /main.css
=> css/main.css $object = substr($file, 1); //若object是 main.css
,则自动抬高 扩张名目录 => css/main.css if (0 !==
strncasecmp($extension, $object, strlen($extension))) { $object =
$extension . ‘/’ . $object; } } //资源真实路径 $filepath =
WEBROOT.’www/’.$object; //替换压缩版本,那部分逻辑与公事减弱逻辑对应 if
(in_array($extension, array(‘css’, ‘js’))) {
if(!str_start_with($object, ‘min/’) &&
file_exists(APPPATH.’libraries/ResMinifier.php’)) { require_once
APPPATH.’libraries/ResMinifier.php’; $resminifier = new ResMinifier();
//获取存放财富版本的公文的数组变量 $resState =
$resminifier->getResState(); //总结取妥帖前文件版本号 $state =
$resminifier->_getResStateVersion($filepath); //判断该版本号是还是不是留存
if (isset($resState[$object])) { //判断是还是不是是.min.css或.min.js结尾 if
(str_end_with($object, ‘.min.’.$extension)) {
//将版本号拼接上去,然后拿走min的文本路径 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) .
$state . ‘.’ . $extension; } else {
//将版本号拼接上去,然后拿走min的文书路径 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state
. ‘.’ . $extension; } //判断min的途径是不是存在在$resState里面 if
(isset($resState[$minObject])) { $object = $minObject; $query = ”; }
} } $file = RES_BASE_URL . $object; } return ($query == null) ? $file
: ($file .’?’. $query); }

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/**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode(‘?’, $file . ‘?’);
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace(‘\\’, ‘/’, $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit(‘can not get class name’);
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if (‘/’ !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .’/’. $className .’/’ . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . ‘/’ . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.’www/’.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array(‘css’, ‘js’))) {
            if(!str_start_with($object, ‘min/’) && file_exists(APPPATH.’libraries/ResMinifier.php’)) {
                require_once APPPATH.’libraries/ResMinifier.php’;
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, ‘.min.’.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) . $state . ‘.’ . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = ”;
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .’?’. $query);
 
    }

代码基本上都给了诠释,方便我们简单去掌握,后面一部分是智能路径css、js能源的门道,前面一部分是替换压缩版本,这一片段的逻辑其实和能源减少那里的逻辑基本一致,就是经过财富文件路径,进行判断和拍卖,最终取得能源的回落版本的路径,最后就将财富的减弱版本的门径重返去,放在'<link
rel=”stylesheet” type=”text/css” href=”‘ . $file . ‘”/>’里面。那样 
,就成功地将能源文件路径替换到了削减版本的财富文件路径,并且在模板输出时,输出的是减掉后的能源文件。

到此,能源替换的始末就到此讲解停止。而整一项技术也分析到此。

三、总结

在此处作者集中地附着本博文讲解中的几个文本代码:

Home.php

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
class Home extends MY_Controller { public function index() {
$this->smartyData[‘test’] = 111; //这些暗中认可是加载
www/css/home/index.css文件 $this->addResLink(‘index.css’);
//这一个暗中同意是加载www/js/jquery.all.min.js文件
$this->addResLink(‘/jquery.all.min.js’);
//这么些私下认可是加载www/js/index.js文件 $this->addResLink(‘index.js’);
$this->displayView(‘home/index.tpl’); } } 点击打开

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
 
class Home extends MY_Controller {
    public function index() {
        $this->smartyData[‘test’] = 111;
        //这个默认是加载 www/css/home/index.css文件
        $this->addResLink(‘index.css’);
        //这个默认是加载www/js/jquery.all.min.js文件
        $this->addResLink(‘/jquery.all.min.js’);
        //这个默认是加载www/js/index.js文件
        $this->addResLink(‘index.js’);
        $this->displayView(‘home/index.tpl’);
    }
}
 
点击打开

My_Controller.php

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
class MY_Controller extends CI_Controller { public function
__construct() { parent::__construct(); //压缩jscss财富文件
$this->compressResHandle(); }
//==========================使用SMA奥迪Q7TY模板引擎================================//
/* Smarty母版页文件路径 */ protected $masterPage = ‘default.tpl’; /*
视图像和文字件路径*/ protected $smartyView; /* 要赋值给smarty视图的数码*/
protected $smartyData = []; /* 财富文件*/ protected $_resLink =
[‘js’=>[], ‘css’=>[]]; /** * 使用母版页输出叁个视图 *
@return [type] [description] */ protected function
displayView($viewName = null, $masterPage = null) { //为空则选拔暗中同意母版
if ($masterPage == null) $masterPage = $this->masterPage;
//获取视图的出口内容 $viewContent =
$this->_fetchView($this->smartyData, $viewName, $masterPage);
$output = ”; //添加css Link foreach ($this->_resLink[‘css’] as
$v) { $output .= res_link($v); } //内容部分 $output .= $viewContent;
//底部添加js 链接 foreach ($this->_resLink[‘js’] as $v) { $output
.= res_link($v); } //发送最后输出结果以及服务器的 HTTP 头到浏览器
$this->output->_display($output); return $output; } private
function _fetchView($smartyData, &$viewName, &$masterPage) { if
($viewName == null) $viewName = $this->smartyView; if
(empty($this->smarty)) { require_once
SMARTY_DIXC90.’Smarty.class.php’; $this->smarty = new 斯马特y();
$this->smarty->setCompileDir(APPPATH . ‘cache/’);
$this->smarty->setCacheDir(APPPATH . ‘cache/’); }
//设置视图真实路径 $this->_getViewDir(true, $viewName, $masterPage,
$templateDir); foreach ($smartyData as $k => $v) {
$this->smarty->assign($k, $v); } if (empty($masterPage)) { return
$this->smarty->fetch($viewName); } else {
$this->smarty->assign(‘VIEW_MAIN’, $viewName); return
$this->smarty->fetch($masterPage); } } /** * 财富路径 * @param
[type] $filePath [description] */ protected function
addResLink($filePath) { list($filePath, $query) = explode(‘?’, $filePath
. ‘?’); $extension = strtolower(pathinfo($filePath,
PATHINFO_EXTENSION)); foreach ($this->_resLink as $v) { if (false
=== array_search($filePath, $this->_resLink[$extension])) {
$this->_resLink[$extension][] = $query == null ? $filePath :
$filePath .’?’. $query; } } return $this; } private function
_getViewDir($setTemplateDir, &$viewName, &$masterPage = null,
&$templateDir) { if (‘/’ === $viewName[0]) $viewName =
substr($viewName, 1); //是不是使用模板,有,则路由到
/views/master_page/*****.tpl下去 if ($masterPage) { $masterPage =
‘/’ === $masterPage[0] ? substr($masterPage, 1) : (‘master_page’
.’/’. $masterPage); } //是还是不是设置模板目录 if ($setTemplateDir) {
$templateDir = VIEWPATH;
$this->smarty->setTemplateDir($templateDir); } } /** *
压缩js、css财富文件(优化) * @return [type] [description] */
private function compressResHandle() {
$this->load->library(‘ResMinifier’); //压缩内定文件夹下的能源文件
$this->resminifier->compressRes(); } } 点击打开

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
 
class MY_Controller extends CI_Controller {
    public function __construct() {
        parent::__construct();
 
        //压缩jscss资源文件
        $this->compressResHandle();
    }
 
    //==========================使用SMARTY模板引擎================================//
    /* Smarty母版页文件路径 */
    protected $masterPage = ‘default.tpl’;
    /* 视图文件路径*/
    protected $smartyView;
    /* 要赋值给smarty视图的数据*/
    protected $smartyData = [];
    /* 资源文件*/
    protected $_resLink = [‘js’=>[], ‘css’=>[]];
 
    /**
     * 使用母版页输出一个视图
     * @return [type] [description]
     */
    protected function displayView($viewName = null, $masterPage = null) {
        //为空则选用默认母版
        if ($masterPage == null) $masterPage = $this->masterPage;
        //获取视图的输出内容
        $viewContent = $this->_fetchView($this->smartyData, $viewName, $masterPage);
 
        $output = ”;
 
        //添加css Link
        foreach ($this->_resLink[‘css’] as $v) {
            $output .= res_link($v);
        }
 
        //内容部分
        $output .= $viewContent;
        //尾部添加js 链接
        foreach ($this->_resLink[‘js’] as $v) {
            $output .= res_link($v);
        }
        //发送最终输出结果以及服务器的 HTTP 头到浏览器
 
        $this->output->_display($output);
        return $output;
    }
 
    private function _fetchView($smartyData, &$viewName, &$masterPage) {
        if ($viewName == null) $viewName = $this->smartyView;
 
        if (empty($this->smarty)) {
            require_once SMARTY_DIR.’Smarty.class.php’;
            $this->smarty = new Smarty();
            $this->smarty->setCompileDir(APPPATH . ‘cache/’);
            $this->smarty->setCacheDir(APPPATH . ‘cache/’);
        }
 
        //设置视图真实路径
        $this->_getViewDir(true, $viewName, $masterPage, $templateDir);
 
        foreach ($smartyData as $k => $v) {
            $this->smarty->assign($k, $v);
        }
 
        if (empty($masterPage)) {
            return $this->smarty->fetch($viewName);
        } else {
            $this->smarty->assign(‘VIEW_MAIN’, $viewName);
            return $this->smarty->fetch($masterPage);
        }
    }
 
    /**
     * 资源路径
     * @param [type] $filePath [description]
     */
    protected function addResLink($filePath) {
        list($filePath, $query) = explode(‘?’, $filePath . ‘?’);
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        foreach ($this->_resLink as $v) {
            if (false === array_search($filePath, $this->_resLink[$extension])) {
                $this->_resLink[$extension][] = $query == null ? $filePath : $filePath .’?’. $query;
            }
        }
 
        return $this;
    }
 
    private function _getViewDir($setTemplateDir, &$viewName, &$masterPage = null, &$templateDir) {
        if (‘/’ === $viewName[0]) $viewName = substr($viewName, 1);
 
        //是否使用模板,有,则路由到 /views/master_page/*****.tpl下去
        if ($masterPage) {
            $masterPage = ‘/’ === $masterPage[0] ? substr($masterPage, 1) : (‘master_page’ .’/’. $masterPage);
        }
 
        //是否设置模板目录
        if ($setTemplateDir) {
            $templateDir = VIEWPATH;
            $this->smarty->setTemplateDir($templateDir);
        }
    }
 
    /**
     * 压缩js、css资源文件(优化)
     * @return [type] [description]
     */
    private function compressResHandle() {
        $this->load->library(‘ResMinifier’);
        //压缩指定文件夹下的资源文件
        $this->resminifier->compressRes();
    }
}
 
点击打开

ResMinifier.php

PHP

<?php defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
/** * 财富压缩类 */ class ResMinifier { /** 要求减弱的财富目录*/
public $compressResDir = [‘css’, ‘js’]; /**
忽略压缩的不二法门,例如此处是js/icon起始的不二法门忽略压缩*/ public
$compressResIngorePrefix = [‘js/icon’]; /** 财富根目录*/ public
$resRootDir; /** 能源版本文件路径*/ private $resStatePath; public
function __construct() { $this->resRootDir = WEBROOT . ‘www/’;
$this->resStatePath = WEBROOT . ‘www/resState.php’; } public function
compressRes() { //获取存放版本的能源文件 $resState =
$this->getResState(); $count = 0; //开首遍历供给减弱的财富目录
foreach ($this->compressResDir as $resDir) { foreach (new
RecursiveIteratorIterator(new
RecursiveDirectoryIterator($this->resRootDir . $resDir ,
FilesystemIterator::SKIP_DOTS)) as $file) { //获取该能源文件的相对路径
$filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
//获取文件相对路径 $object = substr($filePath,
strlen($this->resRootDir)); //总括文件的版本号 $state =
$this->_getResStateVersion($filePath); //获取文件的多少个参数值 if
(true !== $this->getObjectInfo($object, $minObject, $needCompress,
$state, $extension)) { continue; } //压缩文件的绝对路径 $minFilePath =
str_replace(‘\\’, ‘/’, $this->resRootDir. $minObject);
//************此处p判断是最重点部分之一*****************//
//判断文件是不是存在且已经转移过 if (isset($resState[$object]) &&
$resState[$object] == $state && isset($resState[$minObject]) &&
file_exists($minFilePath)) { continue; } //确认保证/www/min/目录可写
$this->_ensureWritableDir(dirname($minFilePath)); if ($needCompress)
{ $this->compressResFileAndSave($filePath, $minFilePath); } else {
copy($filePath, $minFilePath); } $resState[$object] = $state;
$resState[$minObject] = ”; $count++; if ($count == 50) {
$this->_saveResState($resState); $count = 0; } } } if($count)
$this->_saveResState($resState); } /** * 获取能源文件有关音信 *
@param [type] $object 财富文件路径 (www/css/home/index.css) * @param
[type] $minObject 压缩能源文件路径 (www/min/css/home/index.ae123a.css)
* @param [type] $needCompress 是或不是必要压缩 * @param [type] $state
文件版本号 * @param [type] $extension 文件名后缀 * @return [type]
[description] */ public function getObjectInfo($object, &$minObject,
&$needCompress, &$state, &$extension) { //获取能源相对路径 $filePath =
$this->resRootDir . $object; //判断财富是还是不是存在 if
(!file_exists($filePath)) return “财富文件不存在{$filePath}”; //版本号
$state = $this-> _getResStateVersion($filePath); //文件名后缀
$extension = pathinfo($filePath, PATHINFO_EXTENSION); //是还是不是要减弱$needCompress = true; //判断财富文件是还是不是是以 .min.css也许.min.js结尾的
//此类结尾一般都以已缩减过,例如jquery.min.js,就不用再压缩了 if
(str_end_with($object, ‘.min.’.$extension, true)) {
//压缩后的能源存放路径,放在 /www/min/ 目录下 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) .
$state .’.’. $extension; $needCompress = false; } else if
(in_array($extension, $this->compressResDir)) {
//此处是须要减小的文件目录 $minObject = ‘min/’.substr($object, 0,
strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
//看看是不是是忽略的路径前缀 foreach ($this->compressResIngorePrefix as
$v) { if (str_start_with($object, $v, true)) { $needCompress = false;
} } } else { $minObject = ‘min/’.$object; $needCompress = false; }
return true; } /** * 获取存放财富版本的文书 * 它是放在2个数组里 *
$resState = array( * ‘文件路径’ => ‘对应的版本号’, * ‘文件路径’
=> ‘对应的版本号’, * ‘文件路径’ => ‘对应的本子号’, * ); *
@return [type] [description] */ public function getResState() { if
(file_exists($this->resStatePath)) { require $this->resStatePath;
return $resState; } return []; } /** *
总计文件的版本号,这几个是依照测算文件MD5散列值获得版本号 *
只要文件内容变更了,所计算得到的散列值就会不同 *
用于判断财富文件是不是有改变过 * @param [type] $filePath
[description] * @return [type] [description] */ public function
_getResStateVersion($filePath) { return
base_convert(crc32(md5_file($filePath)), 10, 36); } /** *
确定保障目录可写 * @param [type] $dir [description] * @return [type]
[description] */ private function _ensureWritableDir($dir) { if
(!file_exists($dir)) { @mkdir($dir, 0777, true); @chmod($dir, 0777); }
else if (!is_writable($dir)) { @chmod($dir, 0777); if
(!is_writable($dir)) { show_error(‘目录’.$dir.’不可写’); } } } /**
* 将精减后的能源文件写入到/www/min/下去 * @param [type] $filePath
[description] * @param [type] $minFilePath [description] *
@return [type] [description] */ private function
compressResFileAndSave($filePath, $minFilePath) { if
(!file_put_contents($minFilePath,
$this->compressResFile($filePath))) {
//$CI->exceptions->show_exception(“写入文件{$minFilePath}失败”);
show_error(“写入文件{$minFilePath}失利”, -1); } } /** * 压缩能源文件
* @param [type] $filePath [description] * @return [type]
[description] */ private function compressResFile($filePath) {
$extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION)); if
($extension === ‘js’) { require_once ‘JShrink/Minifier.php’; return
\JShrink\Minifier::minify(file_get_contents($filePath)); } else if
($extension ===’css’) { $content = file_get_contents($filePath);
$content =
preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”,
$content); $content = str_replace([“\r\n”, “\r”, “\n”], ”,
$content); $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’,
$content); $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’,
$content); $content = str_replace(‘;}’, ‘}’, $content); return
$content; } else {
//$CI->exceptions->show_exception(“不援救压缩{extension}文件[$filePath]”);
show_error(“不扶助压缩{extension}文件[$filePath]”, -1); } } private
function _saveResState($resState) { ksort($resState); $content =
“<?php\n\n\$resState = array(\n”; foreach ($resState as $k =>
$v) { $content .= “\t ‘$k’ => ‘$v’,\n”; } $content .= “);\n\n”;
file_put_contents($this->resState帕特h, $content); } } 点击打开

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<?php
defined(‘BASEPATH’) OR exit(‘No direct script access allowed’);
/**
* 资源压缩类
*/
class ResMinifier {
    /** 需要压缩的资源目录*/
    public $compressResDir = [‘css’, ‘js’];
    /** 忽略压缩的路径,例如此处是js/icon开头的路径忽略压缩*/
    public $compressResIngorePrefix = [‘js/icon’];
    /** 资源根目录*/
    public $resRootDir;
    /** 资源版本文件路径*/
    private $resStatePath;
 
    public function __construct() {
        $this->resRootDir = WEBROOT . ‘www/’;
        $this->resStatePath = WEBROOT . ‘www/resState.php’;
    }
 
    public function compressRes() {
        //获取存放版本的资源文件
        $resState = $this->getResState();
        $count = 0;
 
        //开始遍历需要压缩的资源目录
        foreach ($this->compressResDir as $resDir) {
            foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($this->resRootDir . $resDir , FilesystemIterator::SKIP_DOTS)) as $file) {
                //获取该资源文件的绝对路径
                $filePath = str_replace(‘\\’, ‘/’, $file->getRealPath());
 
                //获取文件相对路径
                $object = substr($filePath, strlen($this->resRootDir));
 
                //计算文件的版本号
                $state = $this->_getResStateVersion($filePath);
 
                //获取文件的几个参数值
                if (true !== $this->getObjectInfo($object, $minObject, $needCompress, $state, $extension)) {
                    continue;
                }
 
                //压缩文件的绝对路径
                $minFilePath = str_replace(‘\\’, ‘/’, $this->resRootDir. $minObject);
 
                //************此处p判断是最重要部分之一*****************//
                //判断文件是否存在且已经改动过
                if (isset($resState[$object]) && $resState[$object] == $state && isset($resState[$minObject]) && file_exists($minFilePath)) {
                    continue;
                }
 
                //确保/www/min/目录可写
                $this->_ensureWritableDir(dirname($minFilePath));
 
                if ($needCompress) {
                    $this->compressResFileAndSave($filePath, $minFilePath);
                } else {
                    copy($filePath, $minFilePath);
                }
 
                $resState[$object] = $state;
                $resState[$minObject] = ”;
                $count++;
 
                if ($count == 50) {
                    $this->_saveResState($resState);
                    $count = 0;
                }
 
            }
        }
        if($count) $this->_saveResState($resState);
    }
 
    /**
     * 获取资源文件相关信息
     * @param  [type] $object       资源文件路径 (www/css/home/index.css)
     * @param  [type] $minObject    压缩资源文件路径 (www/min/css/home/index.ae123a.css)
     * @param  [type] $needCompress 是否需要压缩
     * @param  [type] $state        文件版本号
     * @param  [type] $extension    文件名后缀
     * @return [type]               [description]
     */
    public function getObjectInfo($object, &$minObject, &$needCompress, &$state, &$extension) {
        //获取资源绝对路径
        $filePath = $this->resRootDir . $object;
        //判断资源是否存在
        if (!file_exists($filePath)) return "资源文件不存在{$filePath}";
        //版本号
        $state = $this-> _getResStateVersion($filePath);
        //文件名后缀
        $extension = pathinfo($filePath, PATHINFO_EXTENSION);
        //是否要压缩
        $needCompress = true;
 
        //判断资源文件是否是以 .min.css或者.min.js结尾的
        //此类结尾一般都是已压缩过,例如jquery.min.js,就不必再压缩了
        if (str_end_with($object, ‘.min.’.$extension, true)) {
            //压缩后的资源存放路径,放在 /www/min/ 目录下
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) . $state .’.’. $extension;
            $needCompress = false;
        } else if (in_array($extension, $this->compressResDir)) {
            //此处是需要压缩的文件目录
            $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
            //看看是否是忽略的路径前缀
            foreach ($this->compressResIngorePrefix as $v) {
                if (str_start_with($object, $v, true)) {
                    $needCompress = false;
                }
            }
        } else {
            $minObject = ‘min/’.$object;
            $needCompress = false;
        }
        return true;
    }
 
    /**
     * 获取存放资源版本的文件
     * 它是放在一个数组里
     * $resState = array(
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *         ‘文件路径’ => ‘对应的版本号’,
     *     );
     * @return [type] [description]
     */
    public function getResState() {
        if (file_exists($this->resStatePath)) {
            require $this->resStatePath;
            return $resState;
        }
        return [];
    }
 
    /**
     * 计算文件的版本号,这个是根据计算文件MD5散列值得到版本号
     * 只要文件内容改变了,所计算得到的散列值就会不一样
     * 用于判断资源文件是否有改动过
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    public function _getResStateVersion($filePath) {
        return base_convert(crc32(md5_file($filePath)), 10, 36);
    }
 
    /**
     * 确保目录可写
     * @param  [type] $dir [description]
     * @return [type]      [description]
     */
    private function _ensureWritableDir($dir) {
        if (!file_exists($dir)) {
            @mkdir($dir, 0777, true);
            @chmod($dir, 0777);
        } else if (!is_writable($dir)) {
            @chmod($dir, 0777);
            if (!is_writable($dir)) {
                show_error(‘目录’.$dir.’不可写’);
            }
        }
    }
 
    /**
     * 将压缩后的资源文件写入到/www/min/下去
     * @param  [type] $filePath    [description]
     * @param  [type] $minFilePath [description]
     * @return [type]              [description]
     */
    private function compressResFileAndSave($filePath, $minFilePath) {
        if (!file_put_contents($minFilePath, $this->compressResFile($filePath))) {
 
            //$CI->exceptions->show_exception("写入文件{$minFilePath}失败");
            show_error("写入文件{$minFilePath}失败", -1);
        }
    }
 
    /**
     * 压缩资源文件
     * @param  [type] $filePath [description]
     * @return [type]           [description]
     */
    private function compressResFile($filePath) {
        $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
        if ($extension === ‘js’) {
            require_once ‘JShrink/Minifier.php’;
            return \JShrink\Minifier::minify(file_get_contents($filePath));
        } else if ($extension ===’css’) {
            $content = file_get_contents($filePath);
            $content = preg_replace(‘!/\*[^*]*\*+([^/][^*]*\*+)*/!’, ”, $content);
            $content = str_replace(["\r\n", "\r", "\n"], ”, $content);
            $content = preg_replace(‘/([{}),;:>])\s+/’, ‘$1’, $content);
            $content = preg_replace(‘/\s+([{}),;:>])/’, ‘$1’, $content);
            $content = str_replace(‘;}’, ‘}’, $content);
            return $content;
        } else {
            //$CI->exceptions->show_exception("不支持压缩{extension}文件[$filePath]");
            show_error("不支持压缩{extension}文件[$filePath]", -1);
 
        }
    }
 
    private function _saveResState($resState) {
        ksort($resState);
        $content = "<?php\n\n\$resState = array(\n";
        foreach ($resState as $k => $v) {
            $content .= "\t ‘$k’ => ‘$v’,\n";
        }
        $content .= ");\n\n";
        file_put_contents($this->resStatePath, $content);
    }
 
}
 
点击打开

Common.php

PHP

<?php /** * 输出 HttpHead 中的能源总是。 css/js 自动判断真实路径
* @param string 文件路径 * @return string */ function
res_link($file) { $file = res_path($file, $extension); if ($extension
=== ‘css’) { return ‘<link rel=”stylesheet” type=”text/css” href=”‘ .
$file . ‘”/>’; } else if ($extension === ‘js’) { return ‘<script
type=”text/javascript” src=”‘.$file.'”></script>’; } else {
return false; } } /** * 智能路由财富实际路径 * @param string 路径 *
@param string 扩展名 * @return string 真实路径 */ function
res_path($file, &$extension) { //检查是或不是留存询问字符串 list($file,
$query) = explode(‘?’, $file . ‘?’); //取得扩充名 $extension =
strtolower(pathinfo($file, PATHINFO_EXTENSION)); // $file =
str_replace(‘\\’, ‘/’, $file); //取妥当前控制器名 global $class; if
($class == null) exit(‘can not get class name’); $className =
strtolower($class); //此处的条条框框是那样: //例如,假诺不加 /
,Home控制器对应的格式是: index.css,那么
此处的路径会变成css/home/index.css //假设有 / ,控制器的格式能够是
/main.css,那么那里的路径会变成 css/main.css(公用的css类) if (‘/’ !==
$file[0]) { //index.css => css/home/index.css $object = $extension
.’/’. $className .’/’ . $file; } else { // /css/main.css 恐怕 /main.css
=> css/main.css $object = substr($file, 1); //若object是 main.css
,则自动抬高 扩大名目录 => css/main.css if (0 !==
strncasecmp($extension, $object, strlen($extension))) { $object =
$extension . ‘/’ . $object; } } //能源真实路径 $filepath =
WEBROOT.’www/’.$object; //替换压缩版本,那有的逻辑与公事减少逻辑对应 if
(in_array($extension, array(‘css’, ‘js’))) {
if(!str_start_with($object, ‘min/’) &&
file_exists(APPPATH.’libraries/ResMinifier.php’)) { require_once
APPPATH.’libraries/ResMinifier.php’; $resminifier = new ResMinifier();
//获取存放财富版本的文件的数组变量 $resState =
$resminifier->getResState(); //计算取稳妥前文件版本号 $state =
$resminifier->_getResStateVersion($filepath); //判断该版本号是或不是留存
if (isset($resState[$object])) { //判断是不是是.min.css或.min.js结尾 if
(str_end_with($object, ‘.min.’.$extension)) {
//将版本号拼接上去,然后拿走min的文本路径 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) .
$state . ‘.’ . $extension; } else {
//将版本号拼接上去,然后拿走min的文书路径 $minObject =
‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state
. ‘.’ . $extension; } //判断min的门径是或不是留存在$resState里面 if
(isset($resState[$minObject])) { $object = $minObject; $query = ”; }
} } $file = RES_BASE_URL . $object; } return ($query == null) ? $file
: ($file .’?’. $query); } /** * 判断 subject 是还是不是以 search开始,
参数钦点是不是忽略大小写 * @param [type] $subject [description] *
@param [type] $search [description] * @param boolean $ignore_case
[description] * @return [type] [description] */ function
str_start_with($subject, $search, $ignore_case = false) { $len2 =
strlen($search); if (0 === $len2) return true; $len1 = strlen($subject);
if ($len1 < $len2) return false; if ($ignore_case) { return 0 ===
strncmp($subject, $search, $len2); } else { return 0 ===
strncasecmp($subject, $search, $len2); } } /** * 判断 subject 是或不是以
search结尾, 参数钦定是或不是忽略大小写 * @param [type] $subject
[description] * @param [type] $search [description] * @param
boolean $ignore_case [description] * @return [type]
[description] */ function str_end_with($subject, $search,
$ignore_case = false) { $len2 = strlen($search); if (0 === $len2)
return true; $len1 = strlen($subject); if ($len2 > $len1) return
false; if ($ignore_case) { return 0 === strcmp(substr($subject, $len1 –
$len2), $search); } else { return 0 === strcasecmp(substr($subject,
$len1 – $len2), $search); } } 点击打开

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<?php
    /**
     * 输出 HttpHead 中的资源连接。 css/js 自动判断真实路径
     * @param  string  文件路径
     * @return string      
     */
    function res_link($file) {
        $file = res_path($file, $extension);
 
        if ($extension === ‘css’) {
           return ‘<link rel="stylesheet" type="text/css" href="’ . $file . ‘"/>’;
        } else if ($extension === ‘js’) {
            return ‘<script type="text/javascript" src="’.$file.’"></script>’;
        } else {
            return false;
        }
    }
 
    /**
     * 智能路由资源真实路径
     * @param  string      路径
     * @param  string      扩展名
     * @return string       真实路径
     */
    function res_path($file, &$extension) {
        //检查是否存在查询字符串
        list($file, $query) = explode(‘?’, $file . ‘?’);
        //取得扩展名
        $extension = strtolower(pathinfo($file, PATHINFO_EXTENSION));
        //
        $file = str_replace(‘\\’, ‘/’, $file);
        //取得当前控制器名
        global $class;
        if ($class == null) exit(‘can not get class name’);
        $className = strtolower($class);
 
        //此处的规则是这样:
        //例如,如果不加 / ,Home控制器对应的格式是: index.css,那么 此处的路径会变成css/home/index.css
        //假如有 / ,控制器的格式可以是 /main.css,那么此处的路径会变成 css/main.css(公用的css类)
        if (‘/’ !== $file[0]) {
            //index.css => css/home/index.css
            $object = $extension .’/’. $className .’/’ . $file;
        } else {
            // /css/main.css 或者 /main.css => css/main.css
            $object = substr($file, 1);
 
            //若object是 main.css ,则自动加上 扩展名目录 => css/main.css
            if (0 !== strncasecmp($extension, $object, strlen($extension))) {
                $object = $extension . ‘/’ . $object;
            }
        }
        //资源真实路径
        $filepath = WEBROOT.’www/’.$object;
 
        //替换压缩版本,这部分逻辑与文件压缩逻辑对应
        if (in_array($extension, array(‘css’, ‘js’))) {
            if(!str_start_with($object, ‘min/’) && file_exists(APPPATH.’libraries/ResMinifier.php’)) {
                require_once APPPATH.’libraries/ResMinifier.php’;
                $resminifier = new ResMinifier();
                //获取存放资源版本的文件的数组变量
                $resState = $resminifier->getResState();
                //计算得到当前文件版本号
                $state = $resminifier->_getResStateVersion($filepath);
                //判断该版本号是否存在
                if (isset($resState[$object])) {
                    //判断是否是.min.css或.min.js结尾
                    if (str_end_with($object, ‘.min.’.$extension)) {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension) – 4) . $state . ‘.’ . $extension;
                    } else {
                        //将版本号拼接上去,然后得到min的文件路径
                        $minObject = ‘min/’.substr($object, 0, strlen($object) – strlen($extension)) . $state . ‘.’ . $extension;
                    }
                    //判断min的路径是否存在在$resState里面
                     if (isset($resState[$minObject])) {
                        $object = $minObject;
                        $query = ”;
                     }
                }
 
            }
 
            $file = RES_BASE_URL . $object;
        }
 
        return ($query == null) ? $file : ($file .’?’. $query);
 
    }
 
    /**
     * 判断 subject 是否以 search开头, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_start_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len1 < $len2) return false;
        if ($ignore_case) {
            return 0 === strncmp($subject, $search, $len2);
        } else {
            return 0 === strncasecmp($subject, $search, $len2);
        }
    }
 
    /**
     * 判断 subject 是否以 search结尾, 参数指定是否忽略大小写
     * @param  [type]  $subject     [description]
     * @param  [type]  $search      [description]
     * @param  boolean $ignore_case [description]
     * @return [type]               [description]
     */
    function str_end_with($subject, $search, $ignore_case = false) {
        $len2 = strlen($search);
        if (0 === $len2) return true;
        $len1 = strlen($subject);
        if ($len2 > $len1) return false;
        if ($ignore_case) {
            return 0 === strcmp(substr($subject, $len1 – $len2), $search);
        } else {
            return 0 === strcasecmp(substr($subject, $len1 – $len2), $search);
        }
    }
 
点击打开

$resState.php(里面包车型客车代码是自动生成的)

XHTML

<?php $resState = array( ‘css/home/index.css’ => ‘gwy933’,
‘js/echarts-all.min.js’ => ‘wqrf1c’, ‘js/home/index.js’ =>
‘s2z6f5’, ‘js/icon.js’ => ‘pgcyih’, ‘js/icon_home.js’ =>
‘zhl9iu’, ‘js/ion.rangeSlider.min.js’ => ‘akq381’,
‘js/jquery-ui-autocomplete.js’ => ‘8nzacv’, ‘js/jquery-ui.min.js’
=> ‘i6tw8z’, ‘js/jquery.all.min.js’ => ‘d2w76v’,
‘js/jquery.city.js’ => ‘toxdrf’, ‘js/jquery.easydropdown.min.js’
=> ‘2ni3i0’, ‘js/jquery.matrix.js’ => ‘3vrqkk’,
‘js/jquery.mobile.all.min.js’ => ‘ernu7r’, ‘js/jquery.qrcode.min.js’
=> ‘yuhnsj’, ‘js/jquery.tinyscrollbar.min.js’ => ‘oakk3c’,
‘js/mobiscroll.custom.min.js’ => ‘kn8h2e’, ‘js/store.min.js’ =>
‘n50jwr’, ‘js/swiper.animate1.0.2.min.js’ => ‘mm27zc’,
‘js/swiper.min.js’ => ‘jicwhh’, ‘min/css/home/index.6a4e83eb.css’
=> ”, ‘min/css/home/index.gwy933.css’ => ”,
‘min/css/home/index.puzbnf.css’ => ”,
‘min/css/home/index.thv8x7.css’ => ”,
‘min/js/echarts-all.76025ee0.js’ => ”,
‘min/js/echarts-all.wqrf1c.js’ => ”, ‘min/js/home/index.65363d41.js’
=> ”, ‘min/js/home/index.s2z6f5.js’ => ”,
‘min/js/icon.5bbd4db9.js’ => ”, ‘min/js/icon.pgcyih.js’ => ”,
‘min/js/icon_home.7fe74076.js’ => ”, ‘min/js/icon_home.zhl9iu.js’
=> ”, ‘min/js/ion.rangeSlider.261d8ed1.js’ => ”,
‘min/js/ion.rangeSlider.akq381.js’ => ”,
‘min/js/jquery-ui-autocomplete.1f3bb62f.js’ => ”,
‘min/js/jquery-ui-autocomplete.8nzacv.js’ => ”,
‘min/js/jquery-ui.418e9683.js’ => ”, ‘min/js/jquery-ui.i6tw8z.js’
=> ”, ‘min/js/jquery.all.2f248267.js’ => ”,
‘min/js/jquery.all.d2w76v.js’ => ”, ‘min/js/jquery.city.6b036feb.js’
=> ”, ‘min/js/jquery.city.toxdrf.js’ => ”,
‘min/js/jquery.easydropdown.2ni3i0.js’ => ”,
‘min/js/jquery.easydropdown.98fa138.js’ => ”,
‘min/js/jquery.matrix.3vrqkk.js’ => ”,
‘min/js/jquery.matrix.dfe2a44.js’ => ”,
‘min/js/jquery.mobile.all.3539ebb7.js’ => ”,
‘min/js/jquery.mobile.all.ernu7r.js’ => ”,
‘min/js/jquery.qrcode.7d9738b3.js’ => ”,
‘min/js/jquery.qrcode.yuhnsj.js’ => ”,
‘min/js/jquery.tinyscrollbar.578e4cb8.js’ => ”,
‘min/js/jquery.tinyscrollbar.oakk3c.js’ => ”,
‘min/js/mobiscroll.custom.4a684f66.js’ => ”,
‘min/js/mobiscroll.custom.kn8h2e.js’ => ”,
‘min/js/store.536545cb.js’ => ”, ‘min/js/store.n50jwr.js’ => ”,
‘min/js/swiper.4650ad75.js’ => ”,
‘min/js/swiper.animate1.0.2.517f82e8.js’ => ”,
‘min/js/swiper.animate1.0.2.mm27zc.js’ => ”,
‘min/js/swiper.jicwhh.js’ => ”, ); 点击打开

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<?php
 
$resState = array(
     ‘css/home/index.css’ => ‘gwy933’,
     ‘js/echarts-all.min.js’ => ‘wqrf1c’,
     ‘js/home/index.js’ => ‘s2z6f5’,
     ‘js/icon.js’ => ‘pgcyih’,
     ‘js/icon_home.js’ => ‘zhl9iu’,
     ‘js/ion.rangeSlider.min.js’ => ‘akq381’,
     ‘js/jquery-ui-autocomplete.js’ => ‘8nzacv’,
     ‘js/jquery-ui.min.js’ => ‘i6tw8z’,
     ‘js/jquery.all.min.js’ => ‘d2w76v’,
     ‘js/jquery.city.js’ => ‘toxdrf’,
     ‘js/jquery.easydropdown.min.js’ => ‘2ni3i0’,
     ‘js/jquery.matrix.js’ => ‘3vrqkk’,
     ‘js/jquery.mobile.all.min.js’ => ‘ernu7r’,
     ‘js/jquery.qrcode.min.js’ => ‘yuhnsj’,
     ‘js/jquery.tinyscrollbar.min.js’ => ‘oakk3c’,
     ‘js/mobiscroll.custom.min.js’ => ‘kn8h2e’,
     ‘js/store.min.js’ => ‘n50jwr’,
     ‘js/swiper.animate1.0.2.min.js’ => ‘mm27zc’,
     ‘js/swiper.min.js’ => ‘jicwhh’,
     ‘min/css/home/index.6a4e83eb.css’ => ”,
     ‘min/css/home/index.gwy933.css’ => ”,
     ‘min/css/home/index.puzbnf.css’ => ”,
     ‘min/css/home/index.thv8x7.css’ => ”,
     ‘min/js/echarts-all.76025ee0.js’ => ”,
     ‘min/js/echarts-all.wqrf1c.js’ => ”,
     ‘min/js/home/index.65363d41.js’ => ”,
     ‘min/js/home/index.s2z6f5.js’ => ”,
     ‘min/js/icon.5bbd4db9.js’ => ”,
     ‘min/js/icon.pgcyih.js’ => ”,
     ‘min/js/icon_home.7fe74076.js’ => ”,
     ‘min/js/icon_home.zhl9iu.js’ => ”,
     ‘min/js/ion.rangeSlider.261d8ed1.js’ => ”,
     ‘min/js/ion.rangeSlider.akq381.js’ => ”,
     ‘min/js/jquery-ui-autocomplete.1f3bb62f.js’ => ”,
     ‘min/js/jquery-ui-autocomplete.8nzacv.js’ => ”,
     ‘min/js/jquery-ui.418e9683.js’ => ”,
     ‘min/js/jquery-ui.i6tw8z.js’ => ”,
     ‘min/js/jquery.all.2f248267.js’ => ”,
     ‘min/js/jquery.all.d2w76v.js’ => ”,
     ‘min/js/jquery.city.6b036feb.js’ => ”,
     ‘min/js/jquery.city.toxdrf.js’ => ”,
     ‘min/js/jquery.easydropdown.2ni3i0.js’ => ”,
     ‘min/js/jquery.easydropdown.98fa138.js’ => ”,
     ‘min/js/jquery.matrix.3vrqkk.js’ => ”,
     ‘min/js/jquery.matrix.dfe2a44.js’ => ”,
     ‘min/js/jquery.mobile.all.3539ebb7.js’ => ”,
     ‘min/js/jquery.mobile.all.ernu7r.js’ => ”,
     ‘min/js/jquery.qrcode.7d9738b3.js’ => ”,
     ‘min/js/jquery.qrcode.yuhnsj.js’ => ”,
     ‘min/js/jquery.tinyscrollbar.578e4cb8.js’ => ”,
     ‘min/js/jquery.tinyscrollbar.oakk3c.js’ => ”,
     ‘min/js/mobiscroll.custom.4a684f66.js’ => ”,
     ‘min/js/mobiscroll.custom.kn8h2e.js’ => ”,
     ‘min/js/store.536545cb.js’ => ”,
     ‘min/js/store.n50jwr.js’ => ”,
     ‘min/js/swiper.4650ad75.js’ => ”,
     ‘min/js/swiper.animate1.0.2.517f82e8.js’ => ”,
     ‘min/js/swiper.animate1.0.2.mm27zc.js’ => ”,
     ‘min/js/swiper.jicwhh.js’ => ”,
);
 
点击打开

 

别的附上JShrink那一个PHP类的链接给大家下载 

若果我们要么觉得不够OK的话,作者直接将这么些试验项目打包供我们下载下来学习和精晓:

四、结语

末尾自身来享受大家线上类别的现实落到实处方案:

我们的档次分线上环境、开发环境和测试环境,在支付和测试环境中,大家每二遍访问都会调用压缩文件的接口,然后再对转移的能源文件的高低是要做判定的,要是缩减后文件过小,就要求将该财富文件的代码合并到此外国资本源文件里去,以此减弱不须要的HTTP请求(因为文件太小,能源的下载时间远远小于HTTP请求响应所消耗的时日);另叁个是图表的拍卖,全部图片都要因而压缩才能由此(例如在: 
那几个网站去减弱图片),在PC端,假若是小图标的话,使用图片合并的方法展开优化,详情可参考本身的那篇博文:http://www.cnblogs.com/it-cen/p/4618954.html   
而在wap端的图形处理利用的是base64编码形式来拍卖图片,详情能够参考自己的那篇博文: 
,当页面输出时,会使用redis来缓存页面(为何用内部存款和储蓄器来缓存而不是应用页面缓存,这一个未来再享受给大家)。即使是线上环境,每发3回版本,才会调用一下资源文件收缩这么些接口,并且线上的静态能源(css、js、图片)是存放在在Ali云的OSS里的,与咱们的应用服务器是分开的。这是大家线上项目标一片段优消除决方案,当然了,还有愈来愈多优化技术,小编会在事后各类总括和享用出去,方便我们齐声读书和沟通。

这次博文就享受到此,谢谢观察此博文的恋人们。

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金沙国际 7

<!DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN”
“;
<html xmlns=” 1999/xhtml”>
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=utf-8″
/>
<title>无标题文书档案</title>
</head>

$this->getname();

其一写成了上传文件类就便于多了,把下面代码保存1个文本它就足以共用调用与修改删除了。

//
$basename = $this->getBaseName($name,”.”.$ext_name);
$final_filename =
$basename.’-‘.time().’-‘.rand(1,10000).’.’.$ext_name;
$this->final_file_path =
$this->save_file_path.’/’.$final_filename;

if (!is_dir($this->dir))
{
$temp = explode(‘/’,$this->dir);
$cur_dir = ”;
for($i=0;$i {
$cur_dir .= $temp[$i].’/’;
if (!is_dir($cur_dir))

此间是出自网上好友的二个贯彻的文件上传类代码,我们详细的牵线了每种变量的用途,上边看看吧,有供给能够参照一下。

<?php
/*————*/
class UploadFile
{
var $user_post_file  = array();
var $save_file_path  = ”;
var $max_file_size   = ”;
var $allow_type      =
array(‘gif’,’jpg’,’png’,’zip’,’rar’,’txt’,’doc’,’pdf’);
var $final_file_path = ”;
var $save_info       = array();
var $error_info      = array();

function createhtml($url=”,$time=0,$dirname=”,$htmlname=”)
{
$this->url=$url?$url:$this->url;
$this->dirname=$dirname?$dirname:$this->dirname;
$this->time=$time?$time:$this->time;
//下边保障不另行地把变量赋予该类成员
if(empty($htmlname))
$this->getname();
else
$this->name=$dirname.’/’.$htmlname; //得到name

<?php教程
 /**
  * 文件上传类
  */
 class uploadFile {

  public $max_size = ‘1000000’;//设置上传文件大小
  public $file_name =
‘date’;//重命名格局意味着以时日命名,别的则运用予以的名号
  public $allow_types;//允许上传的文件扩大名,差别文件类型用“|”隔断
  public $errmsg = ”;//错误音信
  public $uploaded = ”;//上传后的文本名(包含文件路径)
  public $save_path;//上传文件保留路径
  private $files;//提交的等待上传文件
  private $file_type = array();//文件类型
  private $ext = ”;//上传文件扩张名

  /**
   * 构造函数,初步化类
   * @access public
   * @param string $file_name 上传后的文本名
   * @param string $save_path 上传的对象文件夹
   */
  public function __construct($save_path = ‘./upload/’,$file_name
= ‘date’,$allow_types = ”) {
  $this->file_name   =
$file_name;//重命超格局表示以时日命名,别的则利用予以的称号
  $this->save_path   =
(preg_match(‘//$/’,$save_path))
? $save_path : $save_path . ‘/’;
  $this->allow_types = $allow_types == ” ? ‘jpg|gif|png|zip|rar’
: $allow_types;
  }

  /**
   * 上传文件
   * @access public
   * @param $files 等待上传的公文(表单传来的$_FILES[])
   * @return boolean 重返布尔值
   */
 public function upload_file($files) {
  $name = $files[‘name’];
  $type = $files[‘type’];
  $size = $files[‘size’];
  $tmp_name = $files[‘tmp_name’];
  $error = $files[‘error’];

  switch ($error) {
   case 0 : $this->errmsg = ”;
    break;
   case 1 : $this->errmsg = ‘超越了php.ini普通话件大小’;
    break;
   case 2 : $this->errmsg = ‘超过了MAX_FILE_SIZE
选项钦命的文本大小’;
    break;
       case 3 : $this->errmsg = ‘文件唯有部分被上传’;
    break;
   case 4 : $this->errmsg = ‘没有公文被上传’;
    break;
   case 5 : $this->errmsg = ‘上传文件大小为0’;
    break;
      default : $this->errmsg = ‘上传文件失败!’;
    break;
   }
  if($error == 0 && is_uploaded_file($tmp_name)) {
   //检查和测试文件类型
   if($this->check_file_type($name) == FALSE){
    return FALSE;
   }
   //检查和测试文件大小
   if($size > $this->max_size){
    $this->errmsg = ‘上传文件<font
color=red>’.$name.'</font>太大,最大协理<font
color=red>’.ceil($this->max_size/1024).'</font>kb的文件’;
    return FALSE;
   }
   $this->set_save_path();//设置文件存放路径
   $new_name = $this->file_name != ‘date’ ?
$this->file_name.’.’.$this->ext :
date(‘YmdHis’).’.’.$this->ext;//设置新文件名
   $this->uploaded =
$this->save_path.$new_name;//上传后的公文名
   //移动文件
   if(move_uploaded_file($tmp_name,$this->uploaded)){
    $this->errmsg = ‘文件<font
color=red>’.$this->uploaded.'</font>上传成功!’;
    return TRUE;
   }else{
    $this->errmsg = ‘文件<font
color=red>’.$this->uploaded.'</font>上传退步!’;
    return FALSE;
   }

  }
 }

  /**
   * 检查上传文件类型
   * @access public
   * @param string $filename 等待检查的文本名
   * @return 如若检查通过再次来到TRUE 未经过则赶回FALSE和错误新闻
   */
    public function check_file_type($filename){
  $ext = $this->get_file_type($filename);
  $this->ext = $ext;
    $allow_types =
explode(‘|’,$this->allow_types);//分割允许上传的文件扩展名为数组
    //echo $ext;
    //检查上传文件增加名是还是不是在请允许上传的文件增添名中
    if(in_array($ext,$allow_types)){
     return TRUE;
    }else{
     $this->errmsg = ‘上传文件<font
color=red>’.$filename.'</font>类型错误,只帮助上传<font
color=red>’.str_replace(‘|’,’,’,$this->allow_types).'</font>等文件类型!’;
     return FALSE;
    }
    }

    /**
     * 取得文件类型
     * @access public
     * @param string $filename 要博得文件类型的对象文件名
     * @return string 文件类型
     */
    public function get_file_type($filename){
     $info = pathinfo($filename);
     $ext = $info[‘extension’];
     return $ext;
    }

 /**
  * 设置文件上传后的保存路径
  */
 public function set_save_path(){
  $this->save_path = (preg_match(‘//$/’,$this->save_path)) ?
$this->save_path : $this->save_path . ‘/’;
  if(!is_dir($this->save_path)){
   //假若目录不设有,创立目录
   $this->set_dir();
  }
 }

 /**
  * 创制目录
  * @access public
  * @param string $dir 要开创目录的途径
  * @return boolean 战败时再次来到错误音信和FALSE
  */
 public function set_dir($dir = null){
  //检查路径是不是留存
  if(!$dir){
   $dir = $this->save_path;
  }
  if(is_dir($dir)){
   $this->errmsg = ‘须要创造的公文夹已经存在!’;
  }
  $dir = explode(‘/’, $dir);
  foreach($dir as $v){
   if($v){
    $d .= $v . ‘/’;
    if(!is_dir($d)){
     $state = mkdir($d, 0777);
     if(!$state)
      $this->errmsg = ‘在成立目录<font color=red>’ . $d .
‘时出错!’;
    }
   }
  }
  return true;
 }
 }

/*************************************************
 * 图片处理类
 *
 *
能够对图片展开转移缩略图,打水印等操作
 * 本类暗中同意编码为UTF8
若是要在GBK下利用请将img_mark方法中打中文字符串水印iconv证明去掉
 *
 *
由于UTF8汉字和英文字母大小(像素)糟糕鲜明,在中国和英国文混合现身太多时恐怕会出现字符串偏左
 * 或偏右,请根据项目环境对get_mark_xy方法中的$strc_w =
strlen($this->mark_str)*7+5进
 * 行调整
 * 须要GD库帮衬,为更好使用本类推荐应用GD库2.0+
 *
 * @author kickflip@php100 QQ263340607
 *************************************************/

 class uploadImg extends uploadFile {

 public $mark_str =
‘kickflip@php100’; 
//水印字符串
 public $str_r = 0; //字符串颜色卡宴
 public $str_g = 0; //字符串颜色G
 public $str_b = 0; //字符串颜色B
 public $mark_ttf = ‘./upload/SIMSUN.TTC’;
//水印文字字体文件(包涵路径)
 public $mark_logo = ‘./upload/logo.png’;    //水印图片
 public $resize_h;//生成缩略图高
 public $resize_w;//生成缩略图宽
 public $source_img;//源图片文件
 public $dst_path =
‘./upload/’;//缩略图文件存放目录,不填则为源图片存放目录

 /**
  * 生成缩略图 生成后的图
  * @access public
  * @param integer $w 减少后图片的宽(px)
  * @param integer $h 裁减后图片的高(px)
  * @param string $source_img 源图片(路径+文件名)
  */
 public function img_resized($w,$h,$source_img = NULL){
  $source_img = $source_img == NULL ? $this->uploaded :
$source_img;//取得源文件的地址,要是为空则私下认可为上次上传的图纸
  if(!is_file($source_img)) { //检查源图片是不是留存
   $this->errmsg = ‘文件’.$source_img.’不存在’;
   return FALSE;
  }
  $this->source_img = $source_img;
  $img_info = getimagesize($source_img);
  $source = $this->img_create($source_img); //创制源图片
  $this->resize_w = $w;
  $this->resize_h = $h;
  $thumb = imagecreatetruecolor($w,$h);
  imagecopyresized($thumb,$source,0,0,0,0,$w,$h,$img_info[0],$img_info[1]);//生成缩略图片
  $dst_path = $this->dst_path == ” ? $this->save_path :
$this->dst_path; //取得指标文件夹路径
  $dst_path = (preg_match(‘//$/’,$dst_path)) ? $dst_path :
$dst_path . ‘/’;//将指标文件夹后增加/
  if(!is_dir($dst_path)) $this->set_dir($dst_path);
//假如不设有目标文件夹则开创
  $dst_name = $this->set_newname($source_img);
  $this->img_output($thumb,$dst_name);//输出图片
  imagedestroy($source);
  imagedestroy($thumb);
 }

 /**
  *打水印
  *@access public
  *@param string $source_img 源图片路径+文件名
  *@param integer $mark_type
水印类型(1为英文字符串,2为华语字符串,3为图片logo,暗中同意为英文字符串)
  *@param integer $mark_postion
水印地点(1为左下角,2为右下角,3为左上角,4为右上角,默许为右下角);
  *@return 打上水印的图形
  */
 public function img_mark($source_img = NULL,$mark_type =
1,$mark_postion = 2) {
  $source_img = $source_img == NULL ? $this->uploaded :
$source_img;//取得源文件的地址,如若为空则私下认可为上次上传的图形
  if(!is_file($source_img)) { //检查源图片是不是存在
   $this->errmsg = ‘文件’.$source_img.’不存在’;
   return FALSE;
  }
  $this->source_img = $source_img;
  $img_info = getimagesize($source_img);
  $source = $this->img_create($source_img); //成立源图片
  $mark_xy = $this->get_mark_xy($mark_postion);//取得水印地点
  $mark_color =
imagecolorallocate($source,$this->str_r,$this->str_g,$this->str_b);

  switch($mark_type) {

   case 1 : //加英文字符串水印
   $str = $this->mark_str;
   imagestring($source,5,$mark_xy[0],$mark_xy[1],$str,$mark_color);
   $this->img_output($source,$source_img);
   break;

            case 2 : //加汉语字符串水印
            if(!is_file($this->mark_ttf)) {
//检查字体文件是或不是存在
    $this->errmsg =
‘打水印战败:字体文件’.$this->mark_ttf.’不存在!’;
   return FALSE;
   }
   $str = $this->mark_str;
   //$str = iconv(‘gbk’,’utf-8′,$str);//转换字符编码
若是运用GBK编码请去掉此行注释
   imagettftext($source,12,0,$mark_xy[2],$mark_xy[3],$mark_color,$this->mark_ttf,$str);
   $this->img_output($source,$source_img);
   break;

   case 3 : //加图片水印
   if(is_file($this->mark_logo)){ 
//如若存在水印logo的图片则赢得logo图片的着力音讯,不设有则脱离
    $logo_info = getimagesize($this->mark_logo);
   }else{
    $this->errmsg =
‘打水印战败:logo文件’.$this->mark_logo.’不存在!’;
    return FALSE;
   }

   $logo_info = getimagesize($this->mark_logo);
   if($logo_info[0]>$img_info[0] ||
$logo_info[1]>$img_info[1]) {
//要是源图片小于logo大小则脱离
    $this->errmsg =
‘打水印失利:源图片’.$this->source_img.’比’.$this->mark_logo.’小!’;
    return FALSE;
   }

   $logo = $this->img_create($this->mark_logo);
   imagecopy ( $source, $logo, $mark_xy[4], $mark_xy[5], 0, 0,
$logo_info[0], $logo_info[1]);
   $this->img_output($source,$source_img);
   break;

   default: //别的则为文字图片
   $str = $this->mark_str;
   imagestring($source,5,$mark_xy[0],$mark_xy[1],$str,$mark_color);
   $this->img_output($source,$source_img);
   break;
  }
  imagedestroy($source);
 }

 /**
  * 取得水印地方
  * @access private
  * @param integer $mark_postion
水印的岗位(1为左下角,2为右下角,3为左上角,4为右上角,别的为右下角)
  * @return array $mark_xy
水印地方的坐标(索引0为英文字符串水印坐标X,索引1为英文字符串水印坐标Y,
  *
索引2为华语字符串水印坐标X,索引3为汉语字符串水印坐标Y,索引4为水印图片坐标X,索引5为水印图片坐标Y)
  */
 private function get_mark_xy($mark_postion){
  $img_info = getimagesize($this->source_img);

  $stre_w = strlen($this->mark_str)*9+5 ;
//水印英文字符串的长度(px)(5号字的英文字符大小约为9px
为了雅观再加5px)
  //(12号字的普通话字符大小为12px,在utf8里一当中中原人民共和国字长度为叁个字节多个字节4px
而三个英文字符长度叁个字节大小大概为9px
  // 为了在中国和英国文混合的动静下显得完全 设它的长度为字节数*7px)
  $strc_w = strlen($this->mark_str)*7+5 ;
//水印粤语字符串的长度(px)

  if(is_file($this->mark_logo)){
//如果存在水印logo的图形则获得logo图片的中央信息
   $logo_info = getimagesize($this->mark_logo);
  }

  //由于imagestring函数和imagettftext函数中对于字符串早先地点不一样所以英文和国文字符串的Y地点也大相径庭
  //imagestring函数是从文字的左上角为参照
imagettftext函数是从文字左下角为参考
  switch($mark_postion){

   case 1: //地方左下角
   $mark_xy[0] = 5; //水印英文字符串坐标X
   $mark_xy[1] = $img_info[1]-20;//水印英文字符串坐标Y
   $mark_xy[2] = 5; //水印普通话字符串坐标X
   $mark_xy[3] = $img_info[1]-5;//水印中文字符串坐标Y
   $mark_xy[4] = 5;//水印图片坐标X
   $mark_xy[5] =
$img_info[1]-$logo_info[1]-5;//水印图片坐标Y
   break;

   case 2: //地方右下角
   $mark_xy[0] = $img_info[0]-$stre_w; //水印英文字符串坐标X
   $mark_xy[1] = $img_info[1]-20;//水印英文字符串坐标Y
   $mark_xy[2] = $img_info[0]-$strc_w; //水印中文字符串坐标X
   $mark_xy[3] = $img_info[1]-5;//水印汉语字符串坐标Y
   $mark_xy[4] =
$img_info[0]-$logo_info[0]-5;//水印图片坐标X
   $mark_xy[5] =
$img_info[1]-$logo_info[1]-5;//水印图片坐标Y
   break;

   case 3: //地点左上角
   $mark_xy[0] = 5; //水印英文字符串坐标X
   $mark_xy[1] = 5;//水印英文字符串坐标Y
   $mark_xy[2] = 5; //水印汉语字符串坐标X
   $mark_xy[3] = 15;//水印中文字符串坐标Y
   $mark_xy[4] = 5;//水印图片坐标X
   $mark_xy[5] = 5;//水印图片坐标Y
   break;

   case 4: //地点右上角
   $mark_xy[0] = $img_info[0]-$stre_w; //水印英文字符串坐标X
   $mark_xy[1] = 5;//水印英文字符串坐标Y
   $mark_xy[2] = $img_info[0]-$strc_w; //水印普通话字符串坐标X
   $mark_xy[3] = 15;//水印普通话字符串坐标Y
   $mark_xy[4] =
$img_info[0]-$logo_info[0]-5;//水印图片坐标X
   $mark_xy[5] = 5;//水印图片坐标Y
   break;

   default : //其余私下认可为右下角
   $mark_xy[0] = $img_info[0]-$stre_w; //水印英文字符串坐标X
   $mark_xy[1] = $img_info[1]-5;//水印英文字符串坐标Y
   $mark_xy[2] = $img_info[0]-$strc_w; //水印粤语字符串坐标X
   $mark_xy[3] = $img_info[1]-15;//水印中文字符串坐标Y
   $mark_xy[4] =
$img_info[0]-$logo_info[0]-5;//水印图片坐标X
   $mark_xy[5] =
$img_info[1]-$logo_info[1]-5;//水印图片坐标Y
   break;
  }
  return $mark_xy;
 }

 /**
  * 创制源图片
  * @access private
  * @param string $source_img 源图片(路径+文件名)
  * @return img 从目的文件新建的图像
  */
 private function img_create($source_img) {
  $info = getimagesize($source_img);
  switch ($info[2]){
            case 1:
            if(!function_exists(‘imagecreatefromgif’)){
             $source = @imagecreatefromjpeg($source_img);
            }else{
             $source = @imagecreatefromgif($source_img);
            }
            break;
            case 2:
            $source = @imagecreatefromjpeg($source_img);
            break;
            case 3:
            $source = @imagecreatefrompng($source_img);
            break;
            case 6:
            $source = @imagecreatefromwbmp($source_img);
            break;
            default:
   $source = FALSE;
   break;
        }
  return $source;
 }

 /**
  * 重命名图片
  * @access private
  * @param string $source_img 源图片路径+文件名
  * @return string $dst_name 重命名后的图纸名(路径+文件名)
  */
 private function set_newname($sourse_img) {
  $info = pathinfo($sourse_img);
  $new_name =
$this->resize_w.’_’.$this->resize_h.’_’.$info[‘basename’];//将文件名修改为:宽_高_文件名
  if($this->dst_path == ”){
//即便存放缩略图路径为空则暗许为源文件同文件夹
   $dst_name =
str_replace($info[‘basename’],$new_name,$sourse_img);
  }else{
   $dst_name = $this->dst_path.$new_name;
  }
  return $dst_name;
 }

 /**
  * 输出图片
  * @access private
  * @param $im 处理后的图样
  * @param $dst_name 输出后的的图纸名(路径+文件名)
  * @return 输出图片
  */
 public function img_output($im,$dst_name) {
  $info = getimagesize($this->source_img);
  switch ($info[2]){
            case 1:
            if(!function_exists(‘imagegif’)){
             imagejpeg($im,$dst_name);
            }else{
             imagegif($im, $dst_name);
            }
            break;
            case 2:
            imagejpeg($im,$dst_name);
            break;
            case 3:
            imagepng($im,$dst_name);
            break;
            case 6:
            imagewbmp($im,$dst_name);
            break;
        }
 }

 }
?>

/*
 *获得文件的恢弘名
 *
 *@param string $filename
 *@access private
 *@return string
 */
function getExtName($filename)
{
$p = pathinfo($filename);

}
return $this->name;
}

<?php
header(‘content-type:text/html;charset=utf-8’);
require(‘uploadFile.php’);

}
?>

$up = new UploadFile($uploads,’uploads’,1024);
$num = $up->upload();

}
}
}

文本上传类代码

function geturlname($url=”)
{
$this->url=$url?$url:$this->url;

/*
 *
 *
 *
 */
function showErrorInfo()
{
if(count($this->error_info) != 0){
//echo ‘error…<br/>’;
foreach($this->error_info as $k=>$v){
echo ($k+1),’:’,$v,'<br/>’;
}
}
}

case ‘nametime’:
$this->name=$this->dir.’/’.$this->geturlname().’-‘.$this->time.’.htm’;
break;

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