help me, new to regex...

[DanDaBeginner]

please patient with my codes i am totally new when it comes to regex..

 

i got this code..

<?php $str = '/mem/P/ers/none/x/vV7yiWQN21v6zoHR/9xx33';
$patt = '/[a-zA-Z0-9]{3}/[a-zA-Z0-9]/[a-zA-Z0-9]{3}\/[a-zA-Z0-9]{4}/[a-zA-Z0-9]{16}/';
echo preg_replace($patt,"",$str);
?>

 

I need to cut this url: "/mem/P/ers/none/x/vV7yiWQN21v6zoHR/"--> remove this, "9xx33" get this one:

but its not getting the data the worst is, it cuts nothing..im very sure that the error was in my regex.. please help..

thanx in advance...

[DanDaBeginner]

the modify button is missing so I posted a new one.. sowee!

 

I know I can chop this simply by using explode.. but I want to learn regex..

[effigy]

<pre>
<?php

echo $str = '/mem/P/ers/none/x/vV7yiWQN21v6zoHR/9xx33';
echo '<br>';
echo preg_replace('%(.+)/.+\z%', '\1', $str);

?>
</pre>