- var_dump: documentation ( source)
- strpos: documentation ( source)
<?php
$atuatia = "bla\0";
$atuamae = "bla";
echo $atuatia;
$a = strpos($atuatia, $atuamae);
$b = strpos($atuamae, $atuatia);
$c = strpos($atuatia, $atuatia);
var_dump($a);
var_dump($b);
var_dump($c);