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Predefined Constants	GD Functions

	Last updated: Thu, 26 Jun 2008

Examples

Example #1 PNG creation with PHP


<?php



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

$string = $_GET['text'];

$im     = imagecreatefrompng("images/button1.png");

$orange = imagecolorallocate($im, 220, 210, 60);

$px     = (imagesx($im) - 7.5 * strlen($string)) / 2;

imagestring($im, 3, $px, 9, $string, $orange);

imagepng($im);

imagedestroy($im);



?>

This example would be called from a page with a tag like: <img src="button.php?text=text">. The above button.php script then takes this "text" string and overlays it on top of a base image which in this case is "images/button1.png" and outputs the resulting image. This is a very convenient way to avoid having to draw new button images every time you want to change the text of a button. With this method they are dynamically generated.

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Predefined Constants	GD Functions

	Last updated: Thu, 26 Jun 2008

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