WordPress 5 Cookbook

Using multiple conditional tags

So far, we used a single conditional tag in each of the previous scenarios. Now, let's take a look at the use of multiple conditional tags at once to narrow the filtering. In this case, we will be creating a private page and redirecting the users who don't have access to that page. Consider the following code:

function wpccp_chapter2_validate_page_restrictions(){  global $wp_query;  if (! isset($wp_query->post->ID) ) {    return;  }  if(is_page('2') && ! is_user_logged_in() ){    $url = site_url();    wp_redirect($url);    exit;  }}add_action('template_redirect', 'wpccp_chapter2_validate_page_restrictions');

In this case, we use an action called template_redirect, instead of a filter like last time. This is a built-in action ...