upd_0001.php

<?php

if(!defined('INSTALLER_RUN')) die('Patch update file access violation.'); 

/*
	Example installer patch update class. the classname must match
	the php and the sql patch update filename. The php patches are
	only executed when a corresponding sql patch exists.
*/

class upd_0001 extends installer_patch_update {

   public function onBeforeSQL() {
     // Do something
   }
   public function onAfterSQL() {
     // Do something
   }
}

?>