Access user information on a subdomain

• 

  norkru · Member · Apr 22, 2024 at 5:58 pm

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  I am trying to access the WordPress user from a sub-domain (not a multi-site install), but can’t get the following setup to work.

  The single WordPress install is on example.com and I have a script on sub.example.com.

  In example.com/wp-config.php:

  define( 'COOKIE_DOMAIN', 'example.com' );
  define( 'COOKIEPATH', '/' );
  define( 'SITECOOKIEPATH', 'example.com' );
  define( 'COOKIEHASH', md5('example.com') );

  In sub.example.com/helloworld.php:

  header( 'Content-Type: application/json; charset=UTF-8' );
  header( 'Access-Control-Allow-Origin: https://example.com' );
  header( 'Access-Control-Allow-Methods: GET, POST, PUT, DELETE' );
  header( 'Access-Control-Max-Age: 3600' );
  header( 'Access-Control-Allow-Headers: Content-Type, Access-Control-Allow-Headers, Authorization, X-Requested-With' );
  
  define( 'WP_USE_THEMES', false );
  require_once( __DIR__ . '/../../wp-install/wp-load.php' );
  
  echo json_encode( array('wordpress_user_id' => get_current_user_id()) );

  After logging in to WordPress, I can access sub.example.com/helloworld.php which returns the current user ID.

  If I try to make an AJAX call from example.com to sub.example.com/helloworld.php, I get 0 for the current user ID.

  What am I doing wrong?

• 

  norkru · Member · Apr 23, 2024 at 12:45 am

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  <script type="text/javascript">
  jQuery.ajax({
      url: "https://sub.example.com/helloworld.php",
      type: 'GET',
      dataType: 'json',
      success: function(res) {
          console.log('res: ' + JSON.stringify(res));
      }
  });
  </script>

  The AJAX call from example.com to sub.example.com/helloworld.php

• 

  norkru · Member · Apr 23, 2024 at 1:27 am

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  Found two solutions:

  global $current_user;
  $wp_get_current_user_id = $current_user->ID;

  And

  $wp_get_current_user_id = apply_filters( 'determine_current_user', false );

  Which then in helloworld.php would be return:

  echo json_encode( array('wordpress_user_id' => wp_get_current_user_id) );

• 

  aisajib · Member · Apr 24, 2024 at 5:09 am

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  Hi there!

  We can help with WordPress.com sites on this forum. It appears your question is more related to the WordPress software — which also refers to self-hosted WordPress.org sites — so I suggest posting it on the WordPress.org support forum instead.

  There are some differences between WordPress.com and WordPress.org. If you aren’t sure about them, please check the following page that explains the differences between the two: WordPress.com vs. WordPress.org.

  Thanks!