PHP Decode

<?php 
extract(array_combine(range(base64_decode(\"YQ==\"), base64_decode(\"eQ==\")), range(base64_decode(\"Yg==\"), base64_decode(\"eg==\"))));$z = base64_decode(\"QQ==\");extract(array_combine(range('A', 'Y'), range('B', 'Z')));extract(array(base64_decode(\"emVybw==\") => base64_decode(\"MA==\"),base64_decode(\"b25l\") => base64_decode(\"MQ==\"), base64_decode(\"dHdv\") => base64_decode(\"Mg==\"), base64_decode(\"dGhyZWU=\") => base64_decode(\"Mw==\"), base64_decode(\"Zm91cg==\") => base64_decode(\"NA==\"), base64_decode(\"Zml2ZQ==\") => base64_decode(\"NQ==\"), base64_decode(\"c2l4\") => base64_decode(\"Ng==\"), base64_decode(\"c2V2ZW4=\") => base64_decode(\"Nw==\"), base64_decode(\"ZWlnaHQ=\") => base64_decode(\"OA==\"), base64_decode(\"bmluZQ==\") => base64_decode(\"OQ==\"), base64_decode(\"cGx1cw==\") => base64_decode(\"Kw==\"), base64_decode(\"ZXF1YWxz\") => base64_decode(\"PQ==\"), base64_decode(\"ZG9sbHVo\") => base64_decode(\"YQ==\"), base64_decode(\"c3BhY2U=\") => base64_decode(\"IA==\"), base64_decode(\"c2VtaWNvbG9u\") => base64_decode(\"Ow==\"), base64_decode(\"dW5kZXJzY29yZQ==\") => base64_decode(\"Xw==\"), base64_decode(\"c2luZ2xlcXVvdGU=\") => base64_decode(\"Jw==\"), base64_decode(\"cW1hcms=\") => base64_decode(\"Pw==\"), base64_decode(\"ZW1hcms=\") => base64_decode(\"IQ==\"), base64_decode(\"ZG9vbA==\") => base64_decode(\"JA==\")));(($$a . $$$$$$$$$$$$$$$$$a . $$$$a . ${$$$a . $$$$$$$$$$$$$$a . $$$$$$$$$$$a . $$$$$$$$$$$a . $$$$$$$$$$$$$$$$$$$$a . $$$$$$$a} . $$$$$$$$$$$$$$$$$$$a . $$$$a . ${$$$$$$$$$$$$$$$$$$$$a . $$$$$$$$$$$$$a . $$$a . $$$$a . $$$$$$$$$$$$$$$$$a . $$$$$$$$$$$$$$$$$$a . $$a . $$$$$$$$$$$$$$a . $$$$$$$$$$$$$$$$$a . $$$$a} . $$$$$a . $$$$$$$$$$$$$$$$$$$$a . $$$$$$$$$$$$$a . $$a . $$$$$$$$$$$$$$$$$$$a . $$$$$$$$a . $$$$$$$$$$$$$$a . $$$$$$$$$$$$$a)(\"\", \"CCPMC\", false, false, true))(); ?>