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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 |
|---|---|
| 1236 | * @since MU (3.0.0) |
| 1237 | * |
| 1238 | * @param int $blog_id Site ID. |
| 1239 | * @param int $user_id User ID. |
| 1240 | * @param string $domain Site domain. |
| 1241 | * @param string $path Site path. |
| 1242 | * @param int $network_id Network ID. Only relevant on multi-network installations. |
| 1243 | * @param array $meta Meta data. Used to set initial site options. |
| 1244 | */ |
| 1245 | do_action( 'wpmu_new_blog', $blog_id, $user_id, $domain, $path, $network_id, $meta ); |
| 1246 | |
| 1247 | wp_cache_set( 'last_changed', microtime(), 'sites' ); |
| 1248 | |
| 1249 | return $blog_id; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * Notifies the network admin that a new site has been activated. |
| 1254 | * |