Código PHP:
<?php
header("Content-type: image/png");
$file = "http://idrid185.byethost14.com/Private/template.png";
$img = imagecreatefrompng($file);
$text_color = imagecolorallocate($img, 35, 121, 255);
$texto1 = imagestring($img, 3, 50, 3, "Searching bugs for get the BugBlaster and make LittleBigPlanet 2 Better!", $text_color);
imagepng($img);
imagedestroy($img);
?>
Asi?
