// THIS CODE IS UNDER THE PUBLIC DOMAIN function right($string, $chars) { return substr($string, strlen($string) - $chars, $chars); } if (isset($_POST['essid']) && isset($_POST['bssid'])) { $bssid = preg_replace('/:/', '', strtoupper(trim($_POST['bssid']))); if (strlen($bssid) != 12) { die('Mete bien la MAC, buen hombre.'); } $essid = strtoupper(trim($_POST['essid'])); $_ssid = substr($bssid, 0, 8).right($essid, 4); die(substr(md5('bcgbghgg'.$_ssid.$bssid), 0, 20)); }