If you just see a blank page instead of an error reporting and you have no server access so you can't edit php configuration files like php.ini try this:
- create a new file in which you include the faulty script:
<?php error_reporting(E_ALL);ini_set("display_errors", 1); include("file_with_errors.php");?> - execute this file instead of the faulty script file
now errors of your faulty script should be reported.