- var_dump: documentation ( source)
- ini_set: documentation ( source)
- error_reporting: documentation ( source)
- max: documentation ( source)
<?php
error_reporting(E_ALL);
ini_set('display_errors','On');
// array is higher than Infinity and string and 20:
var_dump(max(20,"string",INF,array()));
// InvalidArgumentException? TypeError? never heard of it