验证身份证信息类

   /**
     * 验证身份证号是否正确
     * @param type $idCard 身份证号
     * @return boolean 返回判断结果
     * @date : 2017-04-07
     */
    public function _isIdCard($id=0) {
        $id = strtoupper($id);
        $regx = "/(^d{15}$)|(^d{17}([0-9]|X)$)/";
        $arr_split = array();
        if (!preg_match($regx, $id)) {
            return FALSE;
        }
        if (15 == strlen($id)) { //检查15位 
            $regx = "/^(d{6})+(d{2})+(d{2})+(d{2})+(d{3})$/";

            @preg_match($regx, $id, $arr_split);
            //检查生日日期是否正确 
            $dtm_birth = "19" . $arr_split[2] . '/' . $arr_split[3] . '/' . $arr_split[4];
            if (!strtotime($dtm_birth)) {
                return FALSE;
            } else {
                return TRUE;
            }
        } else {      //检查18位 
            $regx = "/^(d{6})+(d{4})+(d{2})+(d{2})+(d{3})([0-9]|X)$/";
            @preg_match($regx, $id, $arr_split);
            $dtm_birth = $arr_split[2] . '/' . $arr_split[3] . '/' . $arr_split[4];
            if (!strtotime($dtm_birth)) { //检查生日日期是否正确 
                return FALSE;
            } else {
                //检验18位身份证的校验码是否正确。 
                //校验位按照ISO 7064:1983.MOD 11-2的规定生成，X可以认为是数字10。 
                $arr_int = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
                $arr_ch = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
                $sign = 0;
                for ($i = 0; $i < 17; $i++) {
                    $b = (int) $id{$i};
                    $w = $arr_int[$i];
                    $sign += $b * $w;
                }
                $n = $sign % 11;
                $val_num = $arr_ch[$n];
                if ($val_num != substr($id, 17, 1)) {
                    return FALSE;
                } else {
                    return TRUE;
                }
            }
        }
    }

    /**
     * 当前时间的毫秒戳
     * @return type
     * @date : 2017-04-07
     */
    public function _msectime() {
        $arr = explode(' ', microtime());
        $tmp1 = $arr[0];
        $tmp2 = $arr[1];
        return (float) sprintf('%.0f', (floatval($tmp1) + floatval($tmp2)) * 1000);
    }

    /**
     * 十进制转62进制
     * @param type $dec
     * @return type
     * @date : 2017-04-07
     */
    public function _dec62($dec) {
        $base = 62;
        $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $ret = '';
        for ($t = floor(log10($dec) / log10($base)); $t >= 0; $t--) {
            $a = floor($dec / pow($base, $t));
            $ret .= substr($chars, $a, 1);
            $dec -= $a * pow($base, $t);
        }
        return $ret;
    }

    /**
     * 生成八位随机字符
     * @return string
     * @date : 2017-04-07
     */  
    public function _randChar() {
        $base = 62;
        $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
        return $chars[mt_rand(1, $base) - 1];
    }
    
        /**
     * 通过身份证号获取性别；出生日期
     * @param type $card_no 身份证号
     * @return array
     * @date : 2017-05-17
     */
    public function _getSexByCard($card_no){
        $userSexInfo = [];
        $birth = strlen($card_no)==15 ? ('19' . substr($card_no, 6, 6)) : substr($card_no, 6, 8);
        $sex = substr($card_no, (strlen($card_no)==15 ? -2 : -2), 1);
        if($sex % 2 === 0){
           $sex = 2; 
        }else{
           $sex = 1;  
        }
        $userSexInfo['birth'] = $birth;
        $userSexInfo['sex'] = $sex;
        return $userSexInfo;
    }
    
         /**
     * @uses 根据生日计算年龄，年龄的格式是：2016-09-23
     * @param string $birthday
     * @return string|number
     * @date : 2017-04-26
     */
    public function calcAge($birthday = '') {
        $iage = 0;
        if (!empty($birthday)) {
            $year = date('Y', strtotime($birthday));
            $month = date('m', strtotime($birthday));
            $day = date('d', strtotime($birthday));

            $now_year = date('Y');
            $now_month = date('m');
            $now_day = date('d');

            if ($now_year > $year) {
                $iage = $now_year - $year - 1;
                if ($now_month > $month) {
                    $iage++;
                } else if ($now_month == $month) {
                    if ($now_day >= $day) {
                        $iage++;
                    }
                }
            }
        }
        return $iage;
    }