/**
 * 验证身份证
 * @param $vStr
 * @return bool
 */
protected function checkIdCard($vStr)
{
    $vCity = [
        '11', '12', '13', '14', '15', '21', '22',
        '23', '31', '32', '33', '34', '35', '36',
        '37', '41', '42', '43', '44', '45', '46',
        '50', '51', '52', '53', '54', '61', '62',
        '63', '64', '65', '71', '81', '82', '91',
    ];

    if (!preg_match('/^([\d]{17}[xX\d]|[\d]{15})$/', $vStr))
        return false;

    if (!in_array(substr($vStr, 0, 2), $vCity))
        return false;

    $vStr    = preg_replace('/[xX]$/i', 'a', $vStr);
    $vLength = strlen($vStr);

    if ($vLength == 18) {
        $vBirthday = substr($vStr, 6, 4) . '-' . substr($vStr, 10, 2) . '-' . substr($vStr, 12, 2);
    } else {
        $vBirthday = '19' . substr($vStr, 6, 2) . '-' . substr($vStr, 8, 2) . '-' . substr($vStr, 10, 2);
    }

    if (date('Y-m-d', strtotime($vBirthday)) != $vBirthday)
        return false;
    if ($vLength == 18) {
        $vSum = 0;

        for ($i = 17; $i >= 0; $i--) {
            $vSubStr = substr($vStr, 17 - $i, 1);
            $vSum    += (pow(2, $i) % 11) * (($vSubStr == 'a') ? 10 : intval($vSubStr, 11));
        }

        if ($vSum % 11 != 1)
            return false;
    }

    return true;
}