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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 |
|---|---|
| 926 | * |
| 927 | * @param string|false $domain Site domain, or false to prevent the email from sending. |
| 928 | * @param string $path Site path. |
| 929 | * @param string $title Site title. |
| 930 | * @param string $user_login User login name. |
| 931 | * @param string $user_email User email address. |
| 932 | * @param string $key Activation key created in wpmu_signup_blog(). |
| 933 | * @param array $meta Signup meta data. By default, contains the requested privacy setting and lang_id. |
| 934 | */ |
| 935 | if ( ! apply_filters( 'wpmu_signup_blog_notification', $domain, $path, $title, $user_login, $user_email, $key, $meta ) ) { |
| 936 | return false; |
| 937 | } |
| 938 | |
| 939 | // Send email with activation link. |
| 940 | if ( ! is_subdomain_install() || get_current_network_id() != 1 ) { |
| 941 | $activate_url = network_site_url( "wp-activate.php?key=$key" ); |
| 942 | } else { |
| 943 | $activate_url = "http://{$domain}{$path}wp-activate.php?key=$key"; // @todo Use *_url() API. |
| 944 | } |