Description:
------------
---
From manual page: http://www.php.net/function.require-once
---

I'm not sure if this is a documentation problem or a PHP bug. The return value for require/include/require_once/include_once should be 1 unless it was overridden in the included file. However when doing require_once/include_once *twice*, the second time around it returns bool(true) instead of int(1).

Test script:
---------------
<?php
var_dump(include_once('include_file_test.php'));
var_dump(include_once('include_file_test.php'));

/* Outputs:
int(1)
bool(true)
*/