[RESOLVED] stop caching of an image

asa_carter

This script modifies an image from an ajax call. The image displays ok becasue I have added a query string to the of the filename response. When viewed elsewhere on the site, the old image is displayed from cache.

How can I get the new image to load the updated version througout the site without loading everything not from cache?

<?
$direction = $_POST['direction'];

// File
$filename = $_POST['filename'];
$filename = explode("?",$filename);
$filename = $filename[0];

// Rotation
if ($direction=='left')
  $degrees = 270;
if  ($direction=='right')
  $degrees = 90;

// Content type
header('Content-type: image/jpeg');

// Load
$source = imagecreatefromjpeg($filename);

// Rotate
$rotate = imagerotate($source, $degrees, 0);

// Output
imagejpeg($rotate,$filename);
echo $filename."?q=".rand(1,1000);
?>

asa_carter

Header add Cache-Control "max-age=0"
Header add Pragma "no-cache"

in .htaccess in user_images did the trick