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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 |
|---|---|
| 421 | * echoing the returned value instead. |
| 422 | * |
| 423 | * @since 2.7.0 |
| 424 | * |
| 425 | * @see wp_comment_reply() |
| 426 | * |
| 427 | * @param string $content The reply-to form content. |
| 428 | * @param array $args An array of default args. |
| 429 | */ |
| 430 | $content = apply_filters( |
| 431 | 'wp_comment_reply', |
| 432 | '', |
| 433 | array( |
| 434 | 'position' => $position, |
| 435 | 'checkbox' => $checkbox, |
| 436 | 'mode' => $mode, |
| 437 | ) |
| 438 | ); |
| 439 | |