Add height to image?

[Joshua F]

I have a code that will get the value of amount from $_GET, and it adds it to an image I have stored. My problem is the that image I use is 32x32, but I need to add more height to it to make it look correct. The image is transparent so I'd need to keep that also. The code I have now works, but the value of amount is on top of the image where I don't want it to be. Here's my code.

 

<?php
header("Content-type: image/png");

$image = $_GET['image'] .'.png';

$img_handler = imageCreateFromPNG("./item images/" . $image);
imagesavealpha($img_handler, true);
$color = ImageColorAllocate($img_handler, 204, 156, 12);
ImageString($img_handler, 2, 0, 0, $_GET['amount'], $color);
ImagePng($img_handler);
ImageDestroy($img_handler);
?>