comment_form action-hook . WP 1.5.0

Fires at the bottom of the comment form, inside the closing </form> tag.

Usage

add_action( 'comment_form', 'action_function_name_3351' );
function action_function_name_3351( $post_id ){
	// action...
}

$post_id(int)

The post ID.

Where the hook is called

do_action( 'comment_form', $post_id );

Where the hook is used (in WP core)

add_action( 'comment_form', 'wp_comment_form_unfiltered_html_nonce' );