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', 'example_admin_notice');
function 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', 'example_nag_ignore');
function 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['example_nag_ignore']) && '0' == $_GET['example_nag_ignore'] ) {
add_user_meta($user_id, '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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