- var_dump: documentation ( source)
- str_repeat: documentation ( source)
- preg_match: documentation ( source)
- ini_set: documentation ( source)
- ini_get: documentation ( source)
<?php
var_dump(ini_get("pcre.backtrack_limit"));
ini_set("pcre.backtrack_limit", 100 * 1000);
var_dump(preg_match('/TEST/', "aa" . str_repeat("a", 100 * 100000) . "TEST"));