*/
function llms_get_ip_address() {

	$ip = '';

	// phpcs:disable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized -- Look below you.
	// phpcs:disable WordPress.Security.ValidatedSanitizedInput.MissingUnslash -- Look below you.
	if ( isset( $_SERVER['HTTP_X_REAL_IP'] ) ) {
		$ip = $_SERVER['HTTP_X_REAL_IP'];
	} elseif ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) {
		// Proxy servers can send through this header like this: X-Forwarded-For: client1, proxy1, proxy2.
		// Make sure we always only send through the first IP in the list which should always be the client IP.
		$ip = trim( current( explode( ',', $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) );
	} elseif ( isset( $_SERVER['REMOTE_ADDR'] ) ) {
		$ip = $_SERVER['REMOTE_ADDR'];
	}
	// phpcs:enable WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
	// phpcs:enable WordPress.Security.ValidatedSanitizedInput.MissingUnslash

	$ip = sanitize_text_field( wp_unslash( $ip ) );

	if ( ! filter_var( $ip, FILTER_VALIDATE_IP ) ) {
		return '';
	}

	return $ip;