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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 |
|---|---|
| 2508 | * |
| 2509 | * @since 4.7.0 |
| 2510 | * @since 5.5.0 Returning a WP_Error value from the filter will short-circuit comment update |
| 2511 | * and allow skipping further processing. |
| 2512 | * |
| 2513 | * @param array|WP_Error $data The new, processed comment data, or WP_Error. |
| 2514 | * @param array $comment The old, unslashed comment data. |
| 2515 | * @param array $commentarr The new, raw comment data. |
| 2516 | */ |
| 2517 | $data = apply_filters( 'wp_update_comment_data', $data, $comment, $commentarr ); |
| 2518 | |
| 2519 | // Do not carry on on failure. |
| 2520 | if ( is_wp_error( $data ) ) { |
| 2521 | if ( $wp_error ) { |
| 2522 | return $data; |
| 2523 | } else { |
| 2524 | return false; |
| 2525 | } |
| 2526 | } |