PHP Decode

<?php error_reporting(0);ini_set(base64_decode('ZGlzcGxheV9lcnJvcnM='),base64_decode('MA=='));session_start();$k2=json_decode(file_get_contents(base64_decode('b3duZXJhY2NvdW50Lmpzb24=')),true);if($k2[base64_decode('ZW1haWw=')]===null OR $k2[base64_decode('cGFzc2hhc2g=')]===null){header(base64_decode('TG9jYXRpb246c2V0dXBub3RpY2U='));exit;}$e3=json_decode(file_get_contents(base64_decode('Y29uZmlnLmpzb24=')),true);function i0($g4){function r1($n5){$p6=base64_decode('QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVo=');$p7='';for($g8=0;$g8<$n5;$g8++){$p7.=$p6[rand(0,strlen($p6)-1)];}return $p7;}$v9=str_replace(base64_decode('Lg=='),base64_decode('LQ=='),microtime(true));file_put_contents(base64_decode('YWRtaW5sb2dzLw==').$v9.base64_decode('Xw==').r1(6),json_encode($g4,JSON_PRETTY_PRINT),LOCK_EX);}if($_GET[base64_decode('anNyZXF1ZXN0')]===base64_decode('cmVzZXRjb2Rl')){function r1($n5){$p6=base64_decode('QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVowMTIzNDU2Nzg5');$p7='';for($g8=0;$g8<$n5;$g8++){$p7.=$p6[rand(0,strlen($p6)-1)];}return $p7;}$ga=r1(6);$hb=json_decode(file_get_contents(base64_decode('cGFzc3Jlc2V0dG9rZW4uanNvbg==')),true);if((time()-$hb[base64_decode('Z2VudGltZQ==')])<300){echo base64_decode('VG9vIHNvb24=');exit;}$hb=array(base64_decode('dG9rZW4=')=>$ga,base64_decode('Z2VudGltZQ==')=>time());file_put_contents(base64_decode('cGFzc3Jlc2V0dG9rZW4uanNvbg=='),json_encode($hb,JSON_PRETTY_PRINT),LOCK_EX);include base64_decode('bWFpbC5waHA=');$bc=file_get_contents(base64_decode('aHRtbGVtYWlsL3Bhc3N3b3JkcmVzZXQuaHRtbA=='));$vd=file_get_contents(base64_decode('aHRtbGVtYWlsL3Bhc3N3b3JkcmVzZXQudHh0'));$bc=str_replace(base64_decode('PHxjb2RlfD4='),$ga,$bc);$vd=str_replace(base64_decode('PHxjb2RlfD4='),$ga,$vd);$bc=str_replace(base64_decode('PHxkb21haW58Pg=='),$e3[base64_decode('c2l0ZV9kb21haW4=')],$bc);$vd=str_replace(base64_decode('PHxkb21haW58Pg=='),$e3[base64_decode('c2l0ZV9kb21haW4=')],$vd);$ze=$k2[base64_decode('ZW1haWw=')];$uf=m10([$ze],base64_decode('Ynl0ZXNpZ2h0QA==').$e3[base64_decode('c2l0ZV9kb21haW4=')],base64_decode('Qnl0ZVNpZ2h0IFBhc3N3b3JkIFJlc2V0IFJlcXVlc3RlZA=='),$bc,$vd,$e3);file_put_contents(base64_decode('bG9ncy9zZW5kbWFpbF8=').time().base64_decode('LmxvZw=='),$uf);echo base64_decode('b2s=');exit;}if(isset($_POST[base64_decode('cmVzZXRwYXNz')])===true){$r11=json_decode($_POST[base64_decode('cmVzZXRwYXNz')],true);$hb=json_decode(file_get_contents(base64_decode('cGFzc3Jlc2V0dG9rZW4uanNvbg==')),true);if($r11[base64_decode('bmV3cGFzc3dvcmQ=')]!==$r11[base64_decode('bmV3cGFzc3dvcmR2ZXJpZnk=')]){echo base64_decode('UGFzc3dvcmQgbWF0Y2ggZXJyb3I=');exit;}if(time()>($hb[base64_decode('Z2VudGltZQ==')]+300)){echo base64_decode('Q29kZSBleHBpcmVk');exit;}if($r11[base64_decode('Y29kZQ==')]!==$hb[base64_decode('dG9rZW4=')]){echo base64_decode('SW52YWxpZCBjb2Rl');exit;}$k2[base64_decode('cGFzc2hhc2g=')]=password_hash($r11[base64_decode('bmV3cGFzc3dvcmQ=')],PASSWORD_DEFAULT);file_put_contents(base64_decode('b3duZXJhY2NvdW50Lmpzb24='),json_encode($k2,JSON_PRETTY_PRINT),LOCK_EX);echo base64_decode('b2s=');exit;}if(isset($_POST[base64_decode('bG9naW5yZXF1ZXN0')])===true){$q12=json_decode($_POST[base64_decode('bG9naW5yZXF1ZXN0')],true);$g13=json_decode(file_get_contents(base64_decode('b3duZXJhY2NvdW50Lmpzb24=')),true);$e14=json_decode(file_get_contents(base64_decode('ZGVsZWdhdGVzLmpzb24=')),true);$b15=array_keys($e14);if($q12[base64_decode('dXNlcm5hbWU=')]===$g13[base64_decode('ZW1haWw=')]){if(password_verify($q12[base64_decode('cGFzc3dvcmQ=')],$g13[base64_decode('cGFzc2hhc2g=')])===true){$g4=array(base64_decode('dGltZQ==')=>time(),base64_decode('YWN0aW9u')=>base64_decode('bG9naW4='),base64_decode('dXNlcg==')=>base64_decode('b3duZXI='));i0($g4);$_SESSION[base64_decode('Ynl0ZXNpZ2h0dXNlcg==')]=base64_decode('b3duZXI=');echo base64_decode('b2s=');exit;}else{echo base64_decode('SW52YWxpZCBwYXNzd29yZA==');exit;}}elseif(in_array($q12[base64_decode('dXNlcm5hbWU=')],$b15)===true){$c16=$e14[$q12[base64_decode('dXNlcm5hbWU=')]];if(password_verify($q12[base64_decode('cGFzc3dvcmQ=')],$c16[base64_decode('cGFzc2hhc2g=')])===true){$g4=array(base64_decode('dGltZQ==')=>time(),base64_decode('YWN0aW9u')=>base64_decode('bG9naW4='),base64_decode('dXNlcg==')=>$q12[base64_decode('dXNlcm5hbWU=')]);i0($g4);$_SESSION[base64_decode('Ynl0ZXNpZ2h0dXNlcg==')]=$q12[base64_decode('dXNlcm5hbWU=')];echo base64_decode('b2s=');exit;}else{echo base64_decode('SW52YWxpZCBwYXNzd29yZA==');exit;}}else{echo base64_decode('SW52YWxpZCB1c2VybmFtZQ==');exit;}exit;}if(isset($_SESSION[base64_decode('Ynl0ZXNpZ2h0dXNlcg==')])===true){header(base64_decode('TG9jYXRpb246ZGFzaGJvYXJk'));exit;}?> 
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