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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 |
|---|---|
| 3576 | } elseif ( post_password_required( $comment_post_id ) ) { |
| 3577 | |
| 3578 | /** |
| 3579 | * Fires when a comment is attempted on a password-protected post. |
| 3580 | * |
| 3581 | * @since 2.9.0 |
| 3582 | * |
| 3583 | * @param int $comment_post_id Post ID. |
| 3584 | */ |
| 3585 | do_action( 'comment_on_password_protected', $comment_post_id ); |
| 3586 | |
| 3587 | return new WP_Error( 'comment_on_password_protected' ); |
| 3588 | |
| 3589 | } else { |
| 3590 | /** |
| 3591 | * Fires before a comment is posted. |
| 3592 | * |
| 3593 | * @since 2.8.0 |
| 3594 | * |