2.0 - Within Funcion apply_example_filter().... add_action() 3.0 - Before the wp_footer display msg. 3.2 - wp_footer hook not yet called 4.0 - Before the wp_footer display msg.
Modal Example
Welcome to the Page
Checking if apply_example_filter() is being called...
filter me
2.0 - Within Funcion apply_example_filter().... add_action() 6.0 - Done. 7.0 - after do_action('wp_footer')