note 124753 added to function.header

I made a script that generates an optimized image for use on web pages using a 404 script to resize and reduce original images, but on some servers it was generating the image but then not using it due to some kind of cache somewhere of the 404 status. I managed to get it to work with the following and although I don't quite understand it, I hope my posting here does help others with similar issues: header_remove(); header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); // ... and then try redirecting // 201 = The request has been fulfilled, resulting in the creation of a new resource however it's still not loading // 302 "moved temporarily" does seems to load it! header("location:$dst", FALSE, 302); // redirect to the file now we have it ---- Server IP: 45.112.84.4 Probable Submitter: 38.142.137.34 (proxied: 115.189.96.42) ---- Manual Page -- http://php.net/manual/en/function.header.php Edit -- https://master.php.net/note/edit/124753 Del: integrated -- https://master.php.net/note/delete/124753/integrated Del: useless -- https://master.php.net/note/delete/124753/useless Del: bad code -- https://master.php.net/note/delete/124753/bad+code Del: spam -- https://master.php.net/note/delete/124753/spam Del: non-english -- https://master.php.net/note/delete/124753/non-english Del: in docs -- https://master.php.net/note/delete/124753/in+docs Del: other reasons-- https://master.php.net/note/delete/124753 Reject -- https://master.php.net/note/reject/124753 Search -- https://master.php.net/manage/user-notes.php