PHP 批量生成静态文件目录代码

<?php
/**
*  @author：jiangzaixing 20160314
*  获取静态文件方法
*/

class StaticFile
{
const  MAP_FILE_NAME = 'map.json';
static public $files = null;
static public $fileMap = null; //静态文件地址对应map

//要操作的目录
static public $pathList = array(
'image/',
'css/',
'js/'
);
//需要压缩的文件
static public $extList = array(
'js','css','gif','jpg','png'
);

static public $toPath = 'scripts/temp/';

/**
* 获取最新的静态文件
* @param string $fName 文件名称
*/
static public function getFile( $fName ){

$from = dirname(__FILE__).'/../../scripts/' ;
$to = dirname(__FILE__).'/../../scripts/temp/';

if( !self::$fileMap )
self::$fileMap = json_decode( file_get_contents( $to.self::MAP_FILE_NAME ) ,true );
return  self::$fileMap[md5($fName)];

}

/**
* 批量生成新的静态文件
*/
static public function genFiles(){

$from = dirname(__FILE__).'/../../scripts/' ;
$to = dirname(__FILE__).'/../../scripts/temp/' ;

foreach( self::$pathList as $path ){
self::scanfDir( $from.$path );
}

foreach ( self::$files as $file ){
self::genFile( $file , $from , $to);
}

$sMap = file_put_contents( $to.self::MAP_FILE_NAME, json_encode( self::$fileMap ) );

}

static public function scanfDir( $dir , $level = 0 ){
if(( $level == 0 &&!is_dir($dir)) || !is_readable($dir)){
return array( 'isOk'=>false , 'msg'=>"$dir 路径无效" );
}
$handler =  opendir($dir);
while( false !== ($file = readdir($handler)) ){
if(in_array($file,array('.','..'))) continue;
if(is_dir( $dir.$file )){
self::scanfDir( $dir.$file."/", $lev = $level+1 );
continue;
}
self::$files[] = $dir.$file;
}
closedir($handler);
}

/**
*  创建多级目录
*/
static public function createDir( $path ){
if (file_exists($path))
return true;
self::createDir(dirname($path));
mkdir($path, 0777);
}

/**
* 替换css中图片地址  只能写死了。
*/
static public function replaceCssImg( $content , $from , $to ){
$ret = preg_replace_callback('/url\(\/scripts\/([\s\S]*?)\)/',function( $m ){
$_idx = md5( $m[1] );
return '/scripts/temp/'.self::$fileMap[$_idx];
}, $content);
unset( $content );
return $ret;
}

/**
* 生成对应文件
*/
static public function genFile( $file, $from ,$to ){
$len = strlen( $from );
//获取文件在目录中的目录结构 创建文件夹
$info = pathinfo($file);
$relUrl = substr( $file, $len );
$_path = dirname( $relUrl );
self::createDir( $to.$_path );
//获取静态文件内容
$_fcontent = file_get_contents($file);
if( $info['extension'] == 'css' )
$_fcontent = self::replaceCssImg( $_fcontent , $from , $to );
if( in_array( $info['extension'] , self::$extList ) ){
//生成静态文件MD5值
$_idx = md5_file( $file );
$newName = sprintf( '%s.%s.%s', $info['filename'], $_idx, $info['extension']);
file_put_contents( $to.$_path.'/'.$newName, $_fcontent);
self::$fileMap[md5($relUrl)] = $_path.'/'.$newName;
}
// 保存文件内容到新文件
$_oname = sprintf( '%s/%s.%s', $to.$_path, $info['filename'], $info['extension'] );
$ret = file_put_contents( $_oname, $_fcontent);
unset( $_fcontent );
return $ret;
}
}