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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 |
|---|---|
| 2358 | |
| 2359 | // Ensure that the filtered args contain all required default values. |
| 2360 | $args = array_merge( $defaults, $args ); |
| 2361 | |
| 2362 | /** |
| 2363 | * Fires before the comment form. |
| 2364 | * |
| 2365 | * @since 3.0.0 |
| 2366 | */ |
| 2367 | do_action( 'comment_form_before' ); |
| 2368 | ?> |
| 2369 | <div id="respond" class="comment-respond"> |
| 2370 | <?php |
| 2371 | echo $args['title_reply_before']; |
| 2372 | |
| 2373 | comment_form_title( $args['title_reply'], $args['title_reply_to'] ); |
| 2374 | |
| 2375 | echo $args['cancel_reply_before']; |
| 2376 | |