I have install the windows php_rar.dll<http://kromann.info/php5_2-Release/php_rar.dll> extension model in window but I have problem using the functions function extractZip( ) { $rar_file = rar_open('example.rar') or die("Failed to open Rar archive"); $entries_list = rar_list($rar_file); print_r($entries_list); } extractZip( ); *Fatal error*: Call to undefined function rar_open() in on line *4*