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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 |
|---|---|
| 3447 | } elseif ( post_password_required( $comment_post_ID ) ) { |
| 3448 | |
| 3449 | /** |
| 3450 | * Fires when a comment is attempted on a password-protected post. |
| 3451 | * |
| 3452 | * @since 2.9.0 |
| 3453 | * |
| 3454 | * @param int $comment_post_ID Post ID. |
| 3455 | */ |
| 3456 | do_action( 'comment_on_password_protected', $comment_post_ID ); |
| 3457 | |
| 3458 | return new WP_Error( 'comment_on_password_protected' ); |
| 3459 | |
| 3460 | } else { |
| 3461 | |
| 3462 | /** |
| 3463 | * Fires before a comment is posted. |
| 3464 | * |
| 3465 | * @since 2.8.0 |