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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 |
|---|---|
| 1140 | * @since MU |
| 1141 | * |
| 1142 | * @param int $blog_id Blog ID. |
| 1143 | * @param int $user_id User ID. |
| 1144 | * @param string $domain Site domain. |
| 1145 | * @param string $path Site path. |
| 1146 | * @param int $site_id Site ID. Only relevant on multi-network installs. |
| 1147 | * @param array $meta Meta data. Used to set initial site options. |
| 1148 | */ |
| 1149 | do_action( 'wpmu_new_blog', $blog_id, $user_id, $domain, $path, $site_id, $meta ); |
| 1150 | |
| 1151 | return $blog_id; |
| 1152 | } |
| 1153 | |
| 1154 | /** |
| 1155 | * Notifies the network admin that a new site has been activated. |
| 1156 | * |
| 1157 | * Filter 'newblog_notify_siteadmin' to change the content of |
| 1158 | * the notification email. |