Hello! I am trying to track file upload progress using APC extension. However, when trying to use, it gives Fatal error: Call to undefined function apc_fetch() in C:\wamp\www\old\getprogress.php on line 3 I am using WAMP 2.0, with php 5.2.8 APC extension appear on extensions list and is enabled. Any ideas what i am doing wrong? here is the code of getprogress.php: * * $upload = apc_fetch('upload_1'); if ($upload) { if ($upload['done']) $percent = 100; else if ($upload['total'] == 0) $percent = 0; else $percent = $upload['current'] / $upload['total'] * 100;