PHP Decode

<?php define(base64_decode('dmVyc2lvbg=='),base64_decode('MTIuMDExMg=='));$db822131a634e=__DIR__.base64_decode('L3Byb3RlY3RlZC9jb25maWcvbGljLmluYw==');if(!file_exists($db822131a634e)){require(__DIR__.base64_decode('L3Byb3RlY3RlZC9jb25maWcvbGljZW5zZS5waHA='));}define(base64_decode('Uk9PVF9QQVRI'),__DIR__);define(base64_decode('QkFTRV9VUkw='),base64_decode('aHR0cDovLw==').$_SERVER[base64_decode('SFRUUF9IT1NU')].$_SERVER[base64_decode('U0NSSVBUX05BTUU=')]);$x435ed7e9f07f=base64_decode('cHJvdGVjdGVkL2RhdGEvaW5zdGFsbGVyLmxvY2s=');if(!file_exists($x435ed7e9f07f)and!strpos($_SERVER[base64_decode('UkVRVUVTVF9VUkk=')],base64_decode('aW5zdGFsbA=='))){header(base64_decode('TG9jYXRpb246aW5zdGFsbD9sYW5nPXJ1'));exit;}$zb47ea11a5627=__DIR__.base64_decode('L3Byb3RlY3RlZC92ZW5kb3JzL3lpaS95aWkucGhw');$q2245023265ae=__DIR__.base64_decode('L3Byb3RlY3RlZC9jb25maWcvbWFpbi5waHA=');defined(base64_decode('WUlJX0RFQlVH'))or define(base64_decode('WUlJX0RFQlVH'),true);defined(base64_decode('WUlJX1RSQUNFX0xFVkVM'))or define(base64_decode('WUlJX1RSQUNFX0xFVkVM'),3);define(base64_decode('UkVEVUNFX0NPVU5U'),false);if(true===YII_DEBUG){ini_set(base64_decode('ZGlzcGxheV9lcnJvcnM='),base64_decode('T24='));error_reporting(E_ALL&~E_NOTICE);}else{ini_set(base64_decode('ZGlzcGxheV9lcnJvcnM='),base64_decode('T2Zm'));error_reporting(0);}require_once($zb47ea11a5627);Yii::createWebApplication($q2245023265ae)->run();?>