- strstr: documentation ( source)
- explode: documentation ( source)
<?php
$adres = "pl/blog/2016/11/08/raiffeisen-polbank-mobilny-portfel/";
echo $adres;
if(strstr($adres, "blog")!=FALSE){
$url=explode("/", $adres);
$size=count($url);
echo "\n";
echo $url[$size-2];
}