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-rw-r--r--apps/gallery/ajax/getCovers.php6
1 files changed, 6 insertions, 0 deletions
diff --git a/apps/gallery/ajax/getCovers.php b/apps/gallery/ajax/getCovers.php
index d56bf6fa4b7..ebda8d3e47f 100644
--- a/apps/gallery/ajax/getCovers.php
+++ b/apps/gallery/ajax/getCovers.php
@@ -61,6 +61,12 @@ while (($i = $result->fetchRow()) && $counter < $numOfItems) {
header('Content-Type: image/png');
+$offset = 3600 * 24;
+// calc the string in GMT not localtime and add the offset
+header("Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT");
+header('Cache-Control: max-age=3600, must-revalidate');
+header('Pragma: public');
+
imagepng($targetImg);
imagedestroy($targetImg);
?>