how to limit edit_form_after_title hook to page and post edit only?

Question

heelo, I want to use this great hook edit_form_after_title

it was announced on December 1, 2012:
http://make.wordpress.org/core/2012/12/01/more-hooks-on-the-edit-screen/

it curreclty hook for : post-new, post, page-new, page.

how do I make it to work only in edit page/post (only post, page)

thanks all

Answer 1

Personally I'd use a different approach, because @Shazzad's solution seems too much global dependent, and @s_ha_dum's needs 2 hooks instead of one.

I'd use get_current_screen function to get a WP_Screen object, then I'd look at its property to run (or not) something after the title:

function do_something_after_title() {
    $scr = get_current_screen();
    if ( ( $scr->base !== 'post' && $scr->base !== 'page' ) || $scr->action === 'add' )
        return;
    echo '<h2>After title only for post or page edit screen</h2>';
}

add_action( 'edit_form_after_title', 'do_something_after_title' );

Answer 2

Don't know if there was any change during the time that passed from the original question but as of 4.0 you get the post as a parameter to the hook and all that is needed to do is to check the post type. If you wonder what happens when creating a new post the answer is that WordPress generates a dummy post if the post type set to the correct type.

function do_something_after_title( $post ) {
    if( 'post' !== $post->post_type && 'page' !== $post->post_type ) {
        return;
    }

    echo '<h2>After title only for post or page edit screen</h2>';
}
add_action( 'edit_form_after_title', 'do_something_after_title' );

Answer 3

Check post type using $typenow and $pagenow global variables.

add_action( 'edit_form_after_title', 'myprefix_edit_form_after_title' );
function myprefix_edit_form_after_title()
{
    global $typenow, $pagenow;
    if( in_array($typenow, array('post', 'page') ) && $pagenow == 'post.php' )
    {
        echo '<h2>This is edit_form_after_title!</h2>';
    }
}