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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 |
|---|---|
| 3227 | } elseif ( post_password_required( $comment_post_ID ) ) { |
| 3228 | |
| 3229 | /** |
| 3230 | * Fires when a comment is attempted on a password-protected post. |
| 3231 | * |
| 3232 | * @since 2.9.0 |
| 3233 | * |
| 3234 | * @param int $comment_post_ID Post ID. |
| 3235 | */ |
| 3236 | do_action( 'comment_on_password_protected', $comment_post_ID ); |
| 3237 | |
| 3238 | return new WP_Error( 'comment_on_password_protected' ); |
| 3239 | |
| 3240 | } else { |
| 3241 | |
| 3242 | /** |
| 3243 | * Fires before a comment is posted. |
| 3244 | * |
| 3245 | * @since 2.8.0 |