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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 |
---|---|
2634 |
|
2635 | } elseif ( ! is_user_logged_in() ) { |
2636 |
|
2637 | if ( $first_field === $name ) { |
2638 | /** |
2639 | * Fires before the comment fields in the comment form, excluding the textarea. |
2640 | * |
2641 | * @since 3.0.0 |
2642 | */ |
2643 | do_action( 'comment_form_before_fields' ); |
2644 | } |
2645 |
|
2646 | /** |
2647 | * Filters a comment form field for display. |
2648 | * |
2649 | * The dynamic portion of the filter hook, `$name`, refers to the name |
2650 | * of the comment form field. Such as 'author', 'email', or 'url'. |
2651 | * |
2652 | * @since 3.0.0 |