undefined function: imagecopyresampled()

[Anon]

I have a directory of 640X480 images and I want php to make thumbnails of those images on the fly. With the phpinfo() command, I see both:
'--with-gd=shared,/usr'
'--with-jpeg-dir=shared,/usr'
I have GD libgd 2.0.1-1 and libjpeg 6b-4 installed.

when I try:
$dstx = 640; $dsty = 480; $srcx = 1; $srcy = 1;
$dstw = 185; $dsth = 139; $srcw = 640; $srch = 480; imagecopyresized($resizedname, $file, $dstx, $dsty, $srcx, $srcy, $dstw, $dsth, $srcw, $srch);

I get:
Fatal error: Call to undefined function: imagecopyresampled() in /dir/.../file.php/var/www/jpdietrich/noses/noseshots.php

I am not sure what to do now. I would be really happy if somebody could tell me what I am doing wrong and how to fix it.

Thanks,
Jonathan Dietrich
[e-mail]

[Anon]

First you wanna check if the function is available
function_exists()

If not there's a great class to do this
http://phpclasses.upperdesign.com/browse.html/package/272

Mark
www.hdwt.com

[Anon]

Thanks for your thought. I am new to PHP and am trying to learn it. I didn't figure out how function_exists() works, but I did resume progress on my project with the thumbnail class.

Jonathan