Page redirect by page or by user role - Wordpress

wordpress-simple-page-redirect.php

<?php
add_action( 'template_redirect', 'page_redirection' );
function page_redirection() {

  global $current_user;

  $user_id = $current_user->ID;
  $user_info = get_userdata($user_id);
  $user_role = $user_info->roles[0];
    
    // e.g. Redirect users who are not logged-in from About us page to your home page
    if ( is_page( 'about-us' );) && !is_user_logged_in() ) {
      wp_safe_redirect(home_url(), 301); // Use wp_redirect() to redirect to another site, using a hard-coded URL 
      exit;
    }
      
    // e.g. Redirect Subscribers from specific pages to your homepage
    if ( is_page(array(30,187,282,347)) && is_user_logged_in() && $user_role == 'subscriber' ) {
      wp_safe_redirect(home_url(), 301); 
      exit;
    }
    
    // e.g. Redirect Customers from specfic pages to your homepage
    if (is_page( array( 42, 'about-me', 'Contact' ))) && is_user_logged_in() && $user_role == 'customer' ) {
      wp_safe_redirect(home_url(), 301);
      exit;
    }
}

KEY NOTES:
// We don't know for sure whether this is a URL for this site,
// so we use wp_safe_redirect() to avoid an open redirect.
wp_safe_redirect( $url );
 
// We are trying to redirect to another site, using a hard-coded URL.
wp_redirect( 'https://example.com/some/page' );

  // When any single Page is being displayed.
      is_page();
      
  // When Page 42 (ID) is being displayed.
      is_page( 42 );

  // When the Page with a post_title of "Contact" is being displayed.
      is_page( 'Contact' );

  // When the Page with a post_name (slug) of "about-me" is being displayed.
      is_page( 'about-me' );

  /*
   * Returns true when the Pages displayed is either post ID 42,
   * or post_name "about-me", or post_title "Contact".
   * Note: the array ability was added in version 2.5.
   */
      is_page( array( 42, 'about-me', 'Contact' ) );

?>