Horde_ActiveSync_Device::_getIosVersion PHP Method

    protected function _getIosVersion()
    {
        // First see if we have a newer client that sends the OS version
        // Newer iOS sends e.g., "iOS 8.2.2" in OS field.
        if (!empty($this->properties[self::OS]) && preg_match('/\\d+\\.\\d+\\.?\\d?/', $this->properties[self::OS], $matches)) {
            if (!empty($matches[0])) {
                $this->_iOSVersion = $matches[0];
                return;
            }
        }
        // Match to a known UserAgent string version.
        foreach (Horde_ActiveSync_Device_Ios::$VERSION_MAP as $userAgent => $version) {
            if (preg_match('/\\w+\\/(' . $userAgent . ')$/', $this->userAgent, $matches)) {
                $this->_iOSVersion = $version;
                return;
            }
        }
    }