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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 |
---|---|
2687 |
|
2688 | /** |
2689 | * Filters the submit button for the comment form to display. |
2690 | * |
2691 | * @since 4.2.0 |
2692 | * |
2693 | * @param string $submit_button HTML markup for the submit button. |
2694 | * @param array $args Arguments passed to comment_form(). |
2695 | */ |
2696 | $submit_button = apply_filters( 'comment_form_submit_button', $submit_button, $args ); |
2697 |
|
2698 | $submit_field = sprintf( |
2699 | $args['submit_field'], |
2700 | $submit_button, |
2701 | get_comment_id_fields( $post_id ) |
2702 | ); |
2703 |
|
2704 | /** |
2705 | * Filters the submit field for the comment form to display. |