php 验证规则

/**
 * 获取当前http协议
 * @date 2018-04-18
 */
function getProtocol()
{
    if (!input('?server.REQUEST_SCHEME')) {
        $protocol = input('server.SERVER_PORT') == 443 ? "https" : "http";
    } else {
        $protocol = input('server.REQUEST_SCHEME');
    }
    return $protocol;
}

/**
 * 获取当前全部url链接
 * @date 2018-11-27
 */
function getUrl()
{
    $protocol = getProtocol();
    return $protocol . '://' . input('server.HTTP_HOST') . input('server.REQUEST_URI');
}

/**
 * 获取当前的网址加目录信息
 * @date 2018-11-27
 */
function getDomain()
{
    $request = \think\Request::instance();
    $domin = $request->domain();
    return $domin;
}

/**
 * 获取当前或者服务器端的IP    2018-04-19
 * @param  int $type 获取服务器IP类型 1为本地服务器 2为代码服务器
 */
function getClientIp($type = 1)
{
    if ($type == 1) {
        return isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : '0.0.0.0';
    } else if ($type == 2) {
        return isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : '0.0.0.0';
    }
}

/**
 * 检测手机号    2017-10-15
 */
function isMobilephone($mobilehone = '')
{
    if (preg_match("/1[3456789]{1}\d{9}$/", $mobilehone)) {
        return true;
    } else {
        return false;
    }
}

/**
 * 检验是否是座机号
 * @param string $seat_number
 * @return bool
 */
function isSeatNumber($seat_number = '')
{
    $isTel = "/^([0-9]{3,4}-)?[0-9]{7,8}$/";
    if (!preg_match($isTel, $seat_number)) {
        return false;
    } else {
        return true;
    }
}

/**
 * 检验是否是座机号或是手机号
 * @param string $phone
 * @return bool
 */
function isPhone($phone = '')
{
    $isMob = "/^1[3-9]{1}[0-9]{9}$/";
    $isTel = "/^([0-9]{3,4}-)?[0-9]{7,8}$/";
    if (!preg_match($isMob, $phone) && !preg_match($isTel, $phone)) {
        return false;
    } else {
        return true;
    }
}

/**
 * 检测身份证号    2018-03-21
 */
function isCreditNo($vStr)
{
    $vCity = array(
        '11', '12', '13', '14', '15', '21', '22',
        '23', '31', '32', '33', '34', '35', '36',
        '37', '41', '42', '43', '44', '45', '46',
        '50', '51', '52', '53', '54', '61', '62',
        '63', '64', '65', '71', '81', '82', '91'
    );
    if (!preg_match('/^([\d]{17}[xX\d]|[\d]{15})$/', $vStr))
        return false;
    if (!in_array(substr($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;
}

/*
 * 检查邮箱格式是否正确  2018-09-19
 */

function isEmail($email = '')
{
    $mode = '/\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/';
    if (preg_match($mode, $email)) {
        return true;
    } else {
        return false;
    }
}
/**
 * 根据经纬度计算距离    2017-10-15
 * @param $lat经度 $lng维度
 */
function getdistance($lat1, $lng1, $lat2, $lng2)
{
    $EARTH_RADIUS = 6378.137;
    $radLat1 = rad($lat1);
    $radLat2 = rad($lat2);
    $a = $radLat1 - $radLat2;
    $b = rad($lng1) - rad($lng2);
    $s = 2 * asin(sqrt(pow(sin($a / 2), 2) +
            cos($radLat1) * cos($radLat2) * pow(sin($b / 2), 2)));
    $s = $s * $EARTH_RADIUS;
    $s = round($s, 3); //千米为单位，3位小数
    return $s;
}