PHP Image Generation

[fileserverdirect]

Hello all!
I was just wondering how DD had it's "RSS Button maker" and the "Gradent image" tool was made. I did a google search and got a few results, but non actually showing how you program this. Does anyone know a script\website that can explain how to do this (Or maybe you know??).
Thanks,

[thetestingsite]

Check out the GD image functions from the php documentation:

http://www.php.net/manual/en/ref.image.php

Hope this helps.

[fileserverdirect]

Thanks, but one more question:
I am using this script from php.net:

<?php
function LoadPNG($imgname)
{
    $im = @imagecreatefrompng($imgname); /* Attempt to open */
    if (!$im) { /* See if it failed */
        $im  = imagecreatetruecolor(150, 30); /* Create a blank image */
        $bgc = imagecolorallocate($im, 255, 255, 255);
        $tc  = imagecolorallocate($im, 0, 0, 0);
        imagefilledrectangle($im, 0, 0, 150, 30, $bgc);
        /* Output an errmsg */
        imagestring($im, 1, 5, 5, "Error loading $imgname", $tc);
    }
    return $im;
}
header("Content-Type: image/png");
$img = LoadPNG("bogus.image");
imagepng($img);
?>

and I want to write text ontop of the image that I imported. How can I do this? Also, could ths work as "Dynamic Text" such as change it to a certain uploaded font or automaticly add a filter to the text, e.g. shadow, glow etc?

[djr33]

Generally look through the functions on that page and take some time to get used to them. The explanations are complex and tedious, but generally the GD library is a pain anyway-- lots of potential, but awkward to use, and it also is very slow and taxing on the server.

imagestring() writes text.

As for a glow, that's getting more complex. You can try to calculate one yourself or use one of the built in filters with imagefilter().