php删除目录下的所有文件和目录

<?php
/*** 递归实现删除目录下的所有的文件和文件夹* @param $dir 要删除的目录* @param bool $deleteRootToo 是否删除根目录 默认不删除http://www.manongjc.com/article/1333.html*/
function unlinkRecursive($dir, $deleteRootToo = false)
{if(!$dh = @opendir($dir)){return;}while (false !== ($obj = readdir($dh))){if($obj == '.' || $obj == '..'){continue;}if (!@unlink($dir . '/' . $obj))//删除文件, 如果是目录则返回false
        {unlinkRecursive($dir.'/'.$obj, true);}}// http://www.manongjc.com/article/1334.htmlclosedir($dh);if ($deleteRootToo){@rmdir($dir);//删除目录
    }return;
}
unlinkRecursive('dir');
?>