PHP 遍历文件夹里面所有文件

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	/**
	 * 遍历文件夹
	 * @param string $dir
	 * @param boolean $all  true表示递归遍历
	 * @return array
	 */
	public static function scanfDir($dir='', $all = false, &$ret = array()){	
		if ( false !== ($handle = opendir ( $dir ))) {
			while ( false !== ($file = readdir ( $handle )) ) {
				if (!in_array($file, array('.', '..', '.git', '.gitignore', '.svn', '.htaccess', '.buildpath','.project'))) {
					$cur_path = $dir . '/' . $file;
					if (is_dir ( $cur_path )) {
						$ret['dirs'][] =$cur_path;
						$all && self::scanfDir( $cur_path, $all, $ret);
					} else {						
						$ret ['files'] [] = $cur_path;
					}
				}				
			}
			closedir ( $handle );
		}
		return $ret;		
	}