How can I "flip" an image using PHP?

Posted by learner on Stack Overflow See other posts from Stack Overflow or by learner
Published on 2010-06-09T10:54:53Z Indexed on 2010/06/10 17:02 UTC
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Here's what I've tried:

$image = "images/20100609124341Chrysanthemum.jpg"; 
$degrees = 40; 
// Content type 
header('Content-type: image/jpeg'); 
// Load 
$source = imagecreatefromjpeg($filename);
// Rotate 
$rotate = imagerotate($source, $degrees, 0);
// Output 
imagejpeg($rotate); 

...But I get no output. Can anyone tell me what's wrong with this?

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