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1. shiroamada
   Member
   Posted 1 year ago #

   I just find out something with wordpress

   This is the query string I build,

   http://localhost/wp/?test=1&test=2

   print_r($_GET);

   return array.

   however, when I added ?& together, like below

   http://localhost/wp/?&test=1&test=2

   wordpress will redirect to

   http://localhost/wp/?test=1&test=2

   my test array disappear, may I know why will this happen, and what is the rational behind.

   Normal PHP should have this problem, I not sure why wordpress implement this. How can remove this trick?

   Thank you so much.

2. shiroamada
   Member
   Posted 1 year ago #

   I did some edit, no sure it is safe or not, please comment on this solution.
   wp-includes\canonical.php
   original:

   // Note that you can use the "redirect_canonical" filter to cancel a canonical redirect for whatever reason by returning FALSE
   $redirect_url = apply_filters('redirect_canonical', $redirect_url, $requested_url);

   if ( !$redirect_url || $redirect_url == $requested_url ) // yes, again -- in case the filter aborted the request
   return false;

   line 293 I added

   list($base_url, $query_string) = explode('?',$requested_url);
   $position = strpos($query_string, '&');
   if($redirect_url != $requested_url)
   {
   if($position == 0)
   {
   return false;
   }
   }

   After I did the edit, I able to passing with ?& together without any problem.

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