[wp-trac] [WordPress Trac] #35340: PHP Fatal Error: Call to undefined method WP_Error::exists()

[WordPress Trac]

#35340: PHP Fatal Error: Call to undefined method WP_Error::exists()
--------------------------+------------------------------
 Reporter:  crackhd       |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Users         |     Version:  4.4
 Severity:  minor         |  Resolution:
 Keywords:                |     Focuses:
--------------------------+------------------------------
Changes (by crackhd):

 * severity:  normal => minor


Comment:

 Error is caused in my site plugin, sorry for bad report.

 here is code that causes this error:


 {{{

 // Password reset redirection
 add_action('login_headerurl', 'site_checkamail_check');
 function site_checkamail_check()
 {
     // Check if have submitted
     $confirm = ( isset($_GET['checkemail'] ) ? $_GET['checkemail'] : '' );
     if( $confirm )
     {
         wp_redirect(home_url('/login?msg=checkemail'));
         exit;
     }
 }


 /**
  * Redirect user after successful login.
  */
 function my_login_redirect( $redirect_to, $request, $user )
 {
     // Check if have an user instance...
     global $user;
     if (isset($user))
     {
         // Check for moderator access
         if (user_can($user, 'delete_others_posts'))
         {
             // redirect them to admin console
             return home_url('/wp-admin/');
         }
         else
         {
             // Others go to home page
             echo "normal user!";
             return home_url();
         }
     }
     echo "no user!";
     return $redirect_to;
 }

 add_filter( 'login_redirect', 'my_login_redirect', 999, 3 );
 }}}

 I am not sure, but it was working fine previosly, and i don't understand
 why "WP_Error" appears in $user global.

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Ticket URL: <https://core.trac.wordpress.org/ticket/35340#comment:2>
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