<?php
header("Content-type: image/png");
$string = $_GET['text'];
$im = imagecreatefrompng("button_on.png");
$black = imagecolorallocate($im, 0, 0, 0);
$px = (imagesx($im) - 7 * strlen($string)) / 2;
imagestring($im, 3, $px, 5, $string, $black);
imagepng($im);
imagedestroy($im);
?>