如果只需要当前用户id，请使用get\\u current\\u user\\u id，因为这样可以减少执行时间。get\\u current\\u user\\u id仅获取当前用户id，其中wp\\u get\\u current\\u user获取所有用户数据。否则一切都是完美的。

$user_id = get_current_user_id();

$loc_statuss = $wpdb->get_row( "SELECT status FROM profile_location INNER JOIN relation_user ON profile_location.loc_id=relation_user.loc_id WHERE relation_user.user_id=".$user_id );
$loc_status = $loc_statuss->status;

请尝试以下代码：

// Set up the global variables
$user_id;
$loc_status;

// When the user login, setup all variables that you need

function get_user_informations( $redirect_to, $request, $user ) {
    //is there a user to check?
    if ( $user ) {
      $user_id = $user->id;

      $loc_statuss = $wpdb->get_row( "SELECT status FROM profile_location INNER JOIN relation_user ON profile_location.loc_id=relation_user.loc_id WHERE relation_user.user_id=".$user_id );
      $loc_status = $loc_statuss->status;

    }
}

add_filter( \'login_redirect\', \'get_user_informations\', 10, 3 );