check_table_field return all fields

utils.php

   $headers = apache_request_headers();
   if (!isset($headers[$header]))
     return false;
-  $u = database_exec("SELECT id FROM $table WHERE `$field` = :data",
+  $u = database_exec("SELECT * FROM $table WHERE `$field` = :data",
     array(":data" => $headers[$header]))->fetch();
   if (!$u)
     return false;
-  return $headers[$header];
+  return $u;
 }
 
 ?>