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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 |
|---|---|
| 135 | $trackback_id = $wpdb->insert_id; |
| 136 | |
| 137 | /** |
| 138 | * Fires after a trackback is added to a post. |
| 139 | * |
| 140 | * @since 1.2.0 |
| 141 | * |
| 142 | * @param int $trackback_id Trackback ID. |
| 143 | */ |
| 144 | do_action( 'trackback_post', $trackback_id ); |
| 145 | trackback_response( 0 ); |
| 146 | } |
| 147 | |