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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 |
|---|---|
| 402 | * echoing the returned value instead. |
| 403 | * |
| 404 | * @since 2.7.0 |
| 405 | * |
| 406 | * @see wp_comment_reply() |
| 407 | * |
| 408 | * @param string $content The reply-to form content. |
| 409 | * @param array $args An array of default args. |
| 410 | */ |
| 411 | $content = apply_filters( |
| 412 | 'wp_comment_reply', |
| 413 | '', |
| 414 | array( |
| 415 | 'position' => $position, |
| 416 | 'checkbox' => $checkbox, |
| 417 | 'mode' => $mode, |
| 418 | ) |
| 419 | ); |
| 420 | |