wpmu_log_new_registrations( WP_Site|int $blog_id, int|array $user_id )

2108function wpmu_log_new_registrations( $blog_id, $user_id ) {2109	global $wpdb;2110 2111	if ( is_object( $blog_id ) ) {2112		$blog_id = $blog_id->blog_id;2113	}2114 2115	if ( is_array( $user_id ) ) {2116		$user_id = ! empty( $user_id['user_id'] ) ? $user_id['user_id'] : 0;2117	}2118 2119	$user = get_userdata( (int) $user_id );2120	if ( $user ) {2121		$wpdb->insert(2122			$wpdb->registration_log,2123			array(2124				'email'           => $user->user_email,2125				'IP'              => preg_replace( '/[^0-9., ]/', '', wp_unslash( $_SERVER['REMOTE_ADDR'] ) ),2126				'blog_id'         => $blog_id,2127				'date_registered' => current_time( 'mysql' ),2128			)2129		);2130	}2131}