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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 |
|---|---|
| 2017 | * Fires when the comment status is in transition from one specific status to another. |
| 2018 | * |
| 2019 | * The dynamic portions of the hook name, `$old_status`, and `$new_status`, |
| 2020 | * refer to the old and new comment statuses, respectively. |
| 2021 | * |
| 2022 | * @since 2.7.0 |
| 2023 | * |
| 2024 | * @param object $comment Comment object. |
| 2025 | */ |
| 2026 | do_action( "comment_{$old_status}_to_{$new_status}", $comment ); |
| 2027 | } |
| 2028 | /** |
| 2029 | * Fires when the status of a specific comment type is in transition. |
| 2030 | * |
| 2031 | * The dynamic portions of the hook name, `$new_status`, and `$comment->comment_type`, |
| 2032 | * refer to the new comment status, and the type of comment, respectively. |
| 2033 | * |
| 2034 | * Typical comment types include an empty string (standard comment), 'pingback', |
| 2035 | * or 'trackback'. |