srsbiz

<?php 
header('Content-Type: text/html; charset=utf-8');
define('POST_MAX_LENGTH', 4096);

if (!isset($_POST['txt'])) {
    $txt = "<?php\necho 'Hello World!';\n?>";
} elseif(strlen($_POST['txt']) > POST_MAX_LENGTH) {
	$txt = substr($_POST['txt'], 0, POST_MAX_LENGTH);
} else {
	$txt = $_POST['txt'];