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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 |
|---|---|
| 159 | $trackback_id = $wpdb->insert_id; |
| 160 | |
| 161 | /** |
| 162 | * Fires after a trackback is added to a post. |
| 163 | * |
| 164 | * @since 1.2.0 |
| 165 | * |
| 166 | * @param int $trackback_id Trackback ID. |
| 167 | */ |
| 168 | do_action( 'trackback_post', $trackback_id ); |
| 169 | |
| 170 | trackback_response( 0 ); |
| 171 | } |
| 172 | |