PHP文件系统基本操作类

bsp; $path = explode(DIRECTORY_SEPARATOR, $path); // 建立目录层轴
                if ($path[count($path)-1]=="") array_pop($path);
                while (count($ext)) {
                    $i = array_shift($ext);
                    if ($i==".."&&count($path)>1) array_pop($path);
                    elseif (""!=str_replace(".", "", $i)) $path = $i;
                }
                $path = implode(DIRECTORY_SEPARATOR, $path);
            }
            unset($ext, $i);
            return $path;
        }

        /**
         * @]Method Name[= make_dir()
         * @]Purpose[=
         *     建立任意文件夹，相对或绝对路径皆可，深层建立亦可
         * @]Parameter[=
         *     string $path 要建立的最终目录路径
         * @]Return[= boolean 错误返回 FALSE，否则 TRUE
         * @]Author[= SNakeVil <51JS,BU,PHPx> (snakevil@qq.com)
         * @]See[=
         */
        function make_dir($path="") {
            $i = explode(DIRECTORY_SEPARATOR, $this->generate_path($path)); // 生成目录路径
            $path = array_shift($i);
            for ($j=0,$k=count($i);$j<$k;$j++) {
                $path .= DIRECTORY_SEPARATOR.$i[$j];
                if (!is_dir($path)) {