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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 |
|---|---|
| 2197 | $args = array_merge( $defaults, $args ); |
| 2198 | |
| 2199 | if ( comments_open( $post_id ) ) : ?> |
| 2200 | <?php |
| 2201 | /** |
| 2202 | * Fires before the comment form. |
| 2203 | * |
| 2204 | * @since 3.0.0 |
| 2205 | */ |
| 2206 | do_action( 'comment_form_before' ); |
| 2207 | ?> |
| 2208 | <div id="respond" class="comment-respond"> |
| 2209 | <?php |
| 2210 | echo $args['title_reply_before']; |
| 2211 | |
| 2212 | comment_form_title( $args['title_reply'], $args['title_reply_to'] ); |
| 2213 | |
| 2214 | echo $args['cancel_reply_before']; |
| 2215 | |