Xml(php)cache help needed

Hi again :slight_smile: my action script file loads an XML file, dynamically created with PHP ,
These are the lines which load the xml object in flash.

menuXML = new XML();
        menuXML.ignoreWhite = true;

mp3a.php scans files and folders in mp3/a directori on my apache server and then creats list.
But when i open my site in browser and then close it and open it again xml doesnot caching and starting sacan mp3/a dir again, i use apache server 2.x and here is my qwestion ,its my apache problem or my as script problem? Wat can i do to cach this xml ? And is it posiible to cache it about 1 day?or12 hours? :slight_smile: