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In my WP Plugin I have made an error handler. It works so far but I'd like to not echo in admin_notices, but have that nice little message box of wordpress if sth is going wrong:

red box

How can I do so?

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All you need is the correct html markup, namely a paragraph p inside a container div with a certain class. Usable classes are updated green, error & notice-error red, notice-warning orange, notice-info blue. Exemplary usage:

add_action( 'admin_notices', 'wpse330943_admin_notices' );
function wpse330943_admin_notices() {
  <div class="notice notice-error">
    <p>
      //some text
    </p>
  </div>
}
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In the admin_notices doc they tell how to do so
I just found it...

  • The Settings API has some functions for error handling that can be used to generate messages. – Nicolai Mar 7 at 10:51
  • @Nicolai It didn't work ... I may made sth wrong, but since this works out I won't try again now – A new 1 Mar 7 at 10:59

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