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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 |
|---|---|
| 2833 | } elseif ( post_password_required( $comment_post_ID ) ) { |
| 2834 | |
| 2835 | /** |
| 2836 | * Fires when a comment is attempted on a password-protected post. |
| 2837 | * |
| 2838 | * @since 2.9.0 |
| 2839 | * |
| 2840 | * @param int $comment_post_ID Post ID. |
| 2841 | */ |
| 2842 | do_action( 'comment_on_password_protected', $comment_post_ID ); |
| 2843 | |
| 2844 | return new WP_Error( 'comment_on_password_protected' ); |
| 2845 | |
| 2846 | } else { |
| 2847 | |
| 2848 | /** |
| 2849 | * Fires before a comment is posted. |
| 2850 | * |
| 2851 | * @since 2.8.0 |