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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 |
|---|---|
| 2310 | /** |
| 2311 | * Fires after a network option has been deleted. |
| 2312 | * |
| 2313 | * @since 3.0.0 |
| 2314 | * @since 4.7.0 The `$network_id` parameter was added. |
| 2315 | * |
| 2316 | * @param string $option Name of the network option. |
| 2317 | * @param int $network_id ID of the network. |
| 2318 | */ |
| 2319 | do_action( 'delete_site_option', $option, $network_id ); |
| 2320 | |
| 2321 | return true; |
| 2322 | } |
| 2323 | |
| 2324 | return false; |
| 2325 | } |
| 2326 | |
| 2327 | /** |
| 2328 | * Updates the value of a network option that was already added. |