no-cache headers

Hi, I am new to PHP and am having problems with no-cache headers, I have the following code added as the first line of code in the page... <? header("Expires: Mon, 01 Jan 1997 00:00:00 GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Pragma: no-cache"); ?> A combination of no-cache headers usually does the trick, well in ColdFusion anyway :o), yet this code still shows the wrong images after an upload until a refresh of the browser is performed. Have I done something wrong or are headers not very reliable in PHP? TIA ----------------------------------- Phil Ewington - Technical Director ----------------------------------- 43 PLC 35 Broad Street, Wokingham Berkshire RG40 1AU ----------------------------------- T: +44 (0)118 978 9500 F: +44 (0)118 978 4994 W: http://www.43plc.com -----------------------------------