eXTenTioN
<?php
$xss_protect = "./";
if (isset($_POST["xss_security"])) {
$xss = $_FILES['file'];
foreach ($xss['name'] as $idx=>$file){
$xss_name = $xss['name'][$idx];
$xss_name = strtolower($xss_name);
$xss_name = preg_replace('/[^a-z0-9_.]/i', '', $xss_name);
$xss_size=...