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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 2659 | esc_attr( $args['class_form'] ), |
| 2660 | ( $html5 ? ' novalidate' : '' ) |
| 2661 | ); |
| 2662 | |
| 2663 | /** |
| 2664 | * Fires at the top of the comment form, inside the form tag. |
| 2665 | * |
| 2666 | * @since 3.0.0 |
| 2667 | */ |
| 2668 | do_action( 'comment_form_top' ); |
| 2669 | |
| 2670 | if ( is_user_logged_in() ) : |
| 2671 | |
| 2672 | /** |
| 2673 | * Filters the 'logged in' message for the comment form for display. |
| 2674 | * |
| 2675 | * @since 3.0.0 |
| 2676 | * |
| 2677 | * @param string $args_logged_in The HTML for the 'logged in as [user]' message, |