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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 |
|---|---|
| 841 | |
| 842 | $user = new WP_User($user_id); |
| 843 | |
| 844 | $options_site_url = esc_url(network_admin_url('ms-options.php')); |
| 845 | $msg = sprintf(__('New User: %1s |
| 846 | Remote IP: %2s |
| 847 | |
| 848 | Disable these notifications: %3s'), $user->user_login, $_SERVER['REMOTE_ADDR'], $options_site_url); |
| 849 | |
| 850 | $msg = apply_filters( 'newuser_notify_siteadmin', $msg ); |
| 851 | wp_mail( $email, sprintf(__('New User Registration: %s'), $user->user_login), $msg ); |
| 852 | return true; |
| 853 | } |
| 854 | |
| 855 | function domain_exists($domain, $path, $site_id = 1) { |
| 856 | global $wpdb; |
| 857 | return $wpdb->get_var( $wpdb->prepare("SELECT blog_id FROM $wpdb->blogs WHERE domain = %s AND path = %s AND site_id = %d", $domain, $path, $site_id) ); |
| 858 | } |
| 859 | |