imgboard . php

So I was browsing /b/ when it crashed, and a download popped up for imgboard.php

http://pastebin.com/m2c2883d7

Haven't gotten a chance to look through it yet. Is this win?

function make_american($com) {
    if (stripos($com, "america")!==FALSE) return $com; //already american
   
    $com = rtrim($com);
    $end = '!';
   
    if ($com == "") return $com;

    if (preg_match("/([.!?])$/", $com, $matches)) {$end = $matches[1]; $com = substr($com, 0, -1);}
   
    $com .= " IN AMERICA".$end;
   
    return $com;
}
lolwut