Display an admin notice that can be dismissed

 In Wordpress Admin

How to display an admin notice that can be dismissed action.

/* Display an admin notice that can be dismissed */

add_action('admin_notices', 'ns_example_admin_notice');
function ns_example_admin_notice() {

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

 /* Check that the user hasn't already clicked to ignore the message */
 if ( ! get_user_meta($user_id, 'example_ignore_notice') ) {

  echo '<div class="updated"><p>';
  printf(__('This is an annoying nag message. Why do people make these? | <a href="">Hide Notice</a>'), '?example_nag_ignore=0');
  echo "</p></div>";

 }

}

add_action('admin_init', 'ns_example_nag_ignore');
function ns_example_nag_ignore() {

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

 /* If user clicks to ignore the notice, add that to their user meta */
 if ( isset($_GET['ns_example_nag_ignore']) && '0' == $_GET['ns_example_nag_ignore'] ) {
   add_user_meta($user_id, 'ns_example_ignore_notice', 'true', true);
 }

}

Probally you may be also interested in display custom messages to returning visitors @ https://www.wp-code.uk – Nuno Sarmento

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