<?php
namespace app\common\model\merchant;

// use app\common\model\merchant\system\groupData\GroupData;
// use crmeb\services\UploadService;
// use Swoole\Lock;
use app\common\model\merchant\system\config\SystemConfigValue;
use think\db\BaseQuery;

class Common {
    function isDebug(): bool
    {
        return !!env('APP_DEBUG');
    }

    function formToData($form): array
    {
        $rule = $form->formRule();
        $action = $form->getAction();
        $method = $form->getMethod();
        $title = $form->getTitle();
        $config = (object)$form->formConfig();
        $admin = config('admin.api_admin_prefix');
        $merchant = config('admin.api_merchant_prefix');
        $api = $action;
        if (strpos($api, '/' . $admin) === 0) {
            $api = substr($api, strlen($admin) + 1);
        } else if (strpos($api, '/' . $merchant) === 0) {
            $api = substr($api, strlen($merchant) + 1);
        }
        $api = str_replace('.html', '', $api);
        return compact('rule', 'action', 'method', 'title', 'config', 'api');
    }

    function getDistance($lat1, $lng1, $lat2, $lng2)
    {
        //将角度转为狐度
        $radLat1 = deg2rad($lat1); //deg2rad()函数将角度转换为弧度
        $radLat2 = deg2rad($lat2);
        $radLng1 = deg2rad($lng1);
        $radLng2 = deg2rad($lng2);
        $a = $radLat1 - $radLat2;
        $b = $radLng1 - $radLng2;
        $s = 2 * asin(sqrt(pow(sin($a / 2), 2) + cos($radLat1) * cos($radLat2) * pow(sin($b / 2), 2))) * 6371;
        return round($s, 1);
    }

    /**
     * 无线级分类处理
     *
     * @param array $data 数据源
     * @param string $idName 主键
     * @param string $fieldName 父级字段
     * @param string $childrenKey 子级字段名
     * @return array
     */
    function formatCategory(array $data, string $idName = "id", string $fieldName = 'pid', $childrenKey = 'children')
    {
        $items = [];
        foreach ($data as $item) {
            $items[$item[$idName]] = $item;
        }
        $result = array();
        foreach ($items as $item) {
            if (isset($items[$item[$fieldName]])) {
                $items[$item[$fieldName]][$childrenKey][] = &$items[$item[$idName]];
            } else if ($item[$fieldName] == 0) {
                $result[] = &$items[$item[$idName]];
            }
        }
        return $result;
    }

    function formatTreeList(&$options, $name, $pidName = 'pid', $pid = 0, $level = 0, &$data = []): array
    {
        $_options = $options;
        foreach ($_options as $k => $option) {
            if ($option[$pidName] == $pid) {
                $data[] = ['value' => $k, 'label' => str_repeat('|---', $level + 1) . $option[$name]];
                unset($options[$k]);
                formatTreeList($options, $name, $pidName, $k, $level + 1, $data);
            }
        }
        return $data;
    }

    function formatTree(&$options, $name, $pidName = 'pid', $pid = 0, $level = 0, $data = []): array
    {
        $_options = $options;
        foreach ($_options as $k => $option) {
            if ($option[$pidName] == $pid) {
                $value = ['id' => $k, 'title' => $option[$name]];
                unset($options[$k]);
                $value['children'] = formatTree($options, $name, $pidName, $k, $level + 1);
                $data[] = $value;
            }
        }
        return $data;
    }

    function formatCascaderData(&$options, $name, $baseLevel = 0, $pidName = 'pid', $pid = 0, $level = 0, $data = []): array
    {
        $_options = $options;
        foreach ($_options as $k => $option) {
            if ($option[$pidName] == $pid) {
                $value = ['value' => $k, 'label' => $option[$name]];
                unset($options[$k]);
                $value['children'] = formatCascaderData($options, $name, $baseLevel, $pidName, $k, $level + 1);
                if (!count($value['children'])) unset($value['children']);
                $data[] = $value;
            }
        }
        return $data;
    }

    /**
 * @function toMap 数组重新组装
 * @param array $data 数据
 * @param string $field key
 * @param string $value value default null
 * @return array
 */
    function toMap(array $data, $field = 'id', $value = '')
    {
        $result = array();

        if (empty($data)) {
            return $result;
        }

        //开始处理数据
        foreach ($data as $item) {
            $val = $item;
            if (!empty($value)) {
                $val = $item[$value];
            }
            $result[$item[$field]] = $val;
        }

        return $result;
    }

    /**
     * @function getUniqueListByArray 从数组中获取某个字段的值，重新拼装成新的一维数组
     * @param array $data 数据
     * @param string $field key
     * @return array
     */
    function getUniqueListByArray(array $data, $field = 'id')
    {
        return array_unique(array_values(array_column($data, $field)));
    }

    static function isPhone($test)
    {
        return !preg_match("/^1[3456789]{1}\d{9}$/", $test);
    }

    /**
     * 获取本季度 time
     * @param int|string $time
     * @param $ceil
     * @return array
     */
    function getMonth($time = '', $ceil = 0)
    {
        if ($ceil != 0)
            $season = ceil(date('n') / 3) - $ceil;
        else
            $season = ceil(date('n') / 3);
        $firstday = date('Y-m-01', mktime(0, 0, 0, ($season - 1) * 3 + 1, 1, date('Y')));
        $lastday = date('Y-m-t', mktime(0, 0, 0, $season * 3, 1, date('Y')));
        return array($firstday, $lastday);
    }

    /**
     * @param BaseQuery $model
     * @param string $section
     * @param string $prefix
     * @param string $field
     * @return mixed
     * @author xaboy
     * @day 2020-04-29
     */
    function getModelTime(BaseQuery $model, string $section, $prefix = 'create_time', $field = '-',$time = '')
    {
        if (!isset($section)) return $model;
        switch ($section) {
            case 'today':
                $model->whereBetween($prefix, [date('Y-m-d H:i:s', strtotime('today')), date('Y-m-d H:i:s', strtotime('tomorrow -1second'))]);
                break;
            case 'week':
                $model->whereBetween($prefix, [date('Y-m-d H:i:s', strtotime('this week 00:00:00')), date('Y-m-d H:i:s', strtotime('next week 00:00:00 -1second'))]);
                break;
            case 'month':
                $model->whereBetween($prefix, [date('Y-m-d H:i:s', strtotime('first Day of this month 00:00:00')), date('Y-m-d H:i:s', strtotime('first Day of next month 00:00:00 -1second'))]);
                break;
            case 'year':
                $model->whereBetween($prefix, [date('Y-m-d H:i:s', strtotime('this year 1/1')), date('Y-m-d H:i:s', strtotime('next year 1/1 -1second'))]);
                break;
            case 'yesterday':
                $model->whereBetween($prefix, [date('Y-m-d H:i:s', strtotime('yesterday')), date('Y-m-d H:i:s', strtotime('today -1second'))]);
                break;
            case 'quarter':
                list($startTime, $endTime) = getMonth();
                $model = $model->where($prefix, '>', $startTime);
                $model = $model->where($prefix, '<', $endTime);
                break;
            case 'lately7':
                $model = $model->where($prefix, 'between', [date('Y-m-d', strtotime("-7 day")), date('Y-m-d H:i:s')]);
                break;
            case 'lately30':
                $model = $model->where($prefix, 'between', [date('Y-m-d', strtotime("-30 day")), date('Y-m-d H:i:s')]);
                break;
            default:
                if (strstr($section, $field) !== false) {
                    list($startTime, $endTime) = explode($field, $section);
                    if (strlen($startTime) == 4) {
                        $model->whereBetweenTime($prefix, date('Y-m-d H:i:s', strtotime($section)), date('Y-m-d H:i:s', strtotime($section . ' +1day -1second')));
                    } else {
                        if ($startTime == $endTime) {
                            $model = $model->whereBetweenTime($prefix, date('Y-m-d 0:0:0', strtotime($startTime)), date('Y-m-d 23:59:59', strtotime($endTime)));
                        } else if(strpos($startTime, ':')) {
                            $model = $model->whereBetweenTime($prefix, $startTime, $endTime);
                        } else {
                            $model = $model->whereBetweenTime($prefix, date('Y-m-d H:i:s', strtotime($startTime)), date('Y-m-d H:i:s', strtotime($endTime . ' +1day -1second')));
                        }
                    }
                }
                break;
        }
        return $model;
    }

    function hasMany($collection, $field, $model, $searchKey, $insertKey, $where = [] ,$select = '*')
    {
        $ids = [];
        $link = [];

        if (!$collection) return [];
        $collection = $collection->toArray();
        foreach ($collection as $k => $item) {
            if (is_array($item[$field])) {
                $link[$k] = array_unique($item[$field]);
                $ids = array_merge($item[$field], $ids);
            } else {
                $link[$k] = array_unique(explode(',', $item[$field]));
            }
            $ids = array_merge($link[$k], $ids);
            if (isset($collection[$k][$insertKey])) unset($collection[$k][$insertKey]);
        }
        $ids = array_filter(array_unique($ids));
        if (!count($ids)) {
            return $collection;
        }
        $many = $model::whereIn($searchKey, array_unique($ids))->where($where)->field($select)->select();

        if (!$many) return $collection;
        $many = $many->toArray();
        foreach ($link as $k => $val) {
            foreach ($many as $item) {
                if (in_array($item[$searchKey], $val)) {

                    if (!isset($collection[$k][$insertKey])) $collection[$k][$insertKey] = [];

                    $collection[$k][$insertKey][] = $item;
                }
            }
        }

        return $collection;
    }

     //格式活动商品SKU
     function activeProductSku($activeData, $type = null)
     {
         $make = app()->make(\app\common\model\merchant\store\product\Product::class);
         $price = 0;
         $data = [];
         foreach($activeData as $key => $value) {
             $maxPrice = 0;
             $must_price = 0;
             $attrValue = [];
             if(is_null($value['product'])) continue;
             $productSku = $value['productSku'];
             $productAttr = $value['product']['attr'];
             $productAttrValue = $value['product']['attrValue'];
             unset($value['productSku'], $value['product']['attrValue'], $value['product']['attr']);
             foreach ($productAttrValue as $attr_value) {
                 if (!empty($productSku)){
                     foreach ($productSku as $sk => $sv) {
                         if ( $sv['unique'] == $attr_value['unique']) {
                             if ($type == 'discounts') {
                                 unset($attr_value['ot_price'], $attr_value['price']);
                                 $attr_value['ot_price'] = $sv['price'];
                                 $attr_value['price']    = $sv['active_price'];
                                 $_price = bcsub($sv['price'], $sv['active_price'], 2);
                                 if ($value['type']){
                                     $must_price = $must_price > $_price ? $must_price : $_price;
                                 } else {
                                     $maxPrice = $maxPrice > $_price ? $maxPrice : $_price;
                                 }
                             } else {
                                 $attr_value['productSku'] = $sv;
                             }
                             $attrValue[] = $attr_value;
                         }
                     }
                 }
             }
             $attr = $make->detailAttr($productAttr);
             if ($type == 'discounts') {
                 $sku = $make->detailAttrValue($attrValue, null);
                 $value['product']['sku'] = $sku;
 
             } else {
                 $value['product']['attrValue'] = $attrValue;
             }
             $value['product']['attr'] = $attr;
             $price = bcadd($price, bcadd($must_price,$maxPrice,2), 2);
             if ($value['type'] == 1) {
                 array_unshift($data,$value);
             }else {
                 $data[] = $value;
             }
         }
         return compact('data', 'price');
     }

      /**
     * 获取系统配置
     *
     * @param string|string[] $key
     * @return mixed
     * @author xaboy
     * @day 2020-05-08
     */
    static function systemConfig($key)
    {
        return self::merchantConfig(0, $key);
    }

    function getDatesBetweenTwoDays($startDate, $endDate)
    {
        $dates = [];
        if (strtotime($startDate) > strtotime($endDate)) {
            //如果开始日期大于结束日期，直接return 防止下面的循环出现死循环
            return $dates;
        } elseif ($startDate == $endDate) {
            //开始日期与结束日期是同一天时
            array_push($dates, date('m-d', strtotime($startDate)));
            return $dates;
        } else {
            array_push($dates, date('m-d', strtotime($startDate)));
            $currentDate = $startDate;
            do {
                $nextDate = date('Y-m-d', strtotime($currentDate . ' +1 days'));
                array_push($dates, date('m-d', strtotime($currentDate . ' +1 days')));
                $currentDate = $nextDate;
            } while ($endDate != $currentDate);
            return $dates;
        }
    }

    function getStartModelTime(string $section)
    {
        switch ($section) {
            case 'today':
            case 'yesterday':
                return date('Y-m-d', strtotime($section));
            case 'week':
                return date('Y-m-d', strtotime('this week'));
            case 'month':
                return date('Y-m-d', strtotime('first Day of this month'));
            case 'year':
                return date('Y-m-d', strtotime('this year 1/1'));
            case 'quarter':
                list($startTime, $endTime) = getMonth();
                return $startTime;
            case 'lately7':
                return date('Y-m-d', strtotime("-7 day"));
            case 'lately30':
                return date('Y-m-d', strtotime("-30 day"));
            default:
                if (strstr($section, '-') !== false) {
                    list($startTime, $endTime) = explode('-', $section);
                    return date('Y-m-d H:i:s', strtotime($startTime));
                }
                return date('Y-m-d H:i:s');
        }
    }

    /**
     * 获取商户配置
     *
     * @param int $merId
     * @param string|string[] $key
     * @return mixed
     * @author xaboy
     * @day 2020-05-08
     */
    static function merchantConfig(int $merId, $key)
    {
        $request = request();
        $make = app()->make(SystemConfigValue::class);
        
        if (is_array($key)) {
            $_key = [];
            $cacheData = [];
            foreach ($key as $v) {
                // if ($request->hasCache($merId, $v)) {
                //     $cacheData[$v] = $request->getCache($merId, $v);
                // } else {
                    $_key[] = $v;
                // }
            }
            if (!count($_key)) return $cacheData;
            $data = $make->more($_key, $merId);
            // $request->setCache($merId, $data);
            $data += $cacheData;
        } else {
            // if ($request->hasCache($merId, $key)) {
                // $data = $request->getCache($merId, $key);
            // } else {
                $data = $make->get($key, $merId);
                // $request->setCache($merId, $key, $data);
            // }
        }
        return $data;
    }

    // 过滤掉emoji表情
    function filter_emoji($str)
    {
        $str = preg_replace_callback(    //执行一个正则表达式搜索并且使用一个回调进行替换
            '/./u',
            function (array $match) {
                return strlen($match[0]) >= 4 ? '' : $match[0];
            },
            $str
        );
        return $str;
    }

     /**
     * TODO 修改 https 和 http 移动到common
     * @param $url $url 域名
     * @param int $type 0 返回https 1 返回 http
     * @return string
     */
    function setHttpType($url, $type = 0)
    {
        $domainTop = substr($url, 0, 5);
        if ($type) {
            if ($domainTop == 'https') $url = 'http' . substr($url, 5, strlen($url));
        } else {
            if ($domainTop != 'https') $url = 'https:' . substr($url, 5, strlen($url));
        }
        return $url;
    }

    /**
     * TODO 获取小程序二维码是否生成
     * @param $url
     * @return array
     */
    function remoteImage($url)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
        $result = curl_exec($curl);
        $result = json_decode($result, true);
        if (is_array($result)) return ['status' => false, 'msg' => $result['errcode'] . '---' . $result['errmsg']];
        return ['status' => true];
    }


    //-------------------------
     /**
     * 获取图片转为base64
     * @param string $avatar
     * @return bool|string
     */
    function image_to_base64($avatar = '', $timeout = 9)
    {
        try {
            $url = parse_url($avatar);
            $url = $url['host'];
            $header = [
                'User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0',
                'Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3',
                'Accept-Encoding: gzip, deflate, br',
                'accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9',
                'Host:' . $url
            ];
            $dir = pathinfo($url);
            $host = $dir['dirname'];
            $refer = $host . '/';
            $curl = curl_init();
            curl_setopt($curl, CURLOPT_REFERER, $refer);
            curl_setopt($curl, CURLOPT_URL, $avatar);
            curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
            curl_setopt($curl, CURLOPT_ENCODING, 'gzip');
            curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, $timeout);
            curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
            $data = curl_exec($curl);
            $code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
            curl_close($curl);
            if ($code == 200) {
                return "data:image/jpeg;base64," . base64_encode($data);
            } else {
                return false;
            }
        } catch (Exception $e) {
            return false;
        }
    }
}


    /**
     * 获取图片转为base64
     * @param string $avatar
     * @return bool|string
     */
    function put_image($url, $filename = '')
    {

        if ($url == '') {
            return false;
        }
        try {
            if ($filename == '') {

                $ext = pathinfo($url);
                if ($ext['extension'] != "jpg" && $ext['extension'] != "png" && $ext['extension'] != "jpeg") {
                    return false;
                }
                $filename = time() . "." . $ext['extension'];
            }

            //文件保存路径
            ob_start();
            readfile($url);
            $img = ob_get_contents();
            ob_end_clean();
            $path = 'public/uploads/qrcode';
            $fp2 = fopen($path . '/' . $filename, 'a');
            fwrite($fp2, $img);
            fclose($fp2);
            return $path . '/' . $filename;
        } catch (Exception $e) {
            return false;
        }
    }

    /**
     * 路径转url路径
     * @param $path
     * @return string
     */
    function path_to_url($path)
    {
        return trim(str_replace(DIRECTORY_SEPARATOR, '/', $path), '.');
    }

    /**
     * 路径转url路径
     * @param $url
     * @param int $http
     * @param string $site
     * @return string
     */
    function tidy_url($url, $http = null, $site = null)
    {
        if (!$site) {
            $site = systemConfig('site_url');
        }
        $url = path_to_url($url);
        if (strpos($url, 'http') === false)
            $url = rtrim($site, '/') . '/' . ltrim($url, '/');

        if (is_null($http)) {
            $http = (parse_url($site)['scheme'] ?? '') == 'https' ? 0 : 1;
        }
        $url = set_http_type($url, $http);
        return $url;
    }


    /**
     * CURL 检测远程文件是否在
     * @param $url
     * @return bool
     */
    function curl_file_exist($url)
    {
        $ch = curl_init();
        try {
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_HEADER, 1);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
            $contents = curl_exec($ch);
            if (preg_match("/404/", $contents)) return false;
            if (preg_match("/403/", $contents)) return false;
            return true;
        } catch (Exception $e) {
            return false;
        }
    }


    /**
     * 修改 https 和 http
     * @param $url $url 域名
     * @param int $type 0 返回https 1 返回 http
     * @return string
     */
    function set_http_type($url, $type = 0)
    {
        $domainTop = substr($url, 0, 5);
        if ($type) {
            if ($domainTop == 'https') $url = 'http' . substr($url, 5, strlen($url));
        } else {
            if ($domainTop != 'https') $url = 'https:' . substr($url, 5, strlen($url));
        }
        return $url;
    }


    function getTimes()
    {
        $dates = [];
        for ($i = 0; $i <= 24; $i++) {
            for ($j = 0; $j < 60; $j++) {
                $dates[] = sprintf('%02.d', $i) . ':' . sprintf('%02.d', $j);
            }
        }
        return $dates;
    }

    /**
     * 获取周一
     *
     * @param null $time
     * @return false|string
     * @author xaboy
     * @day 2020/6/22
     */
    function monday($time = null)
    {
        return date('Y-m-d', strtotime('Sunday -6 day', $time ?: time()));
    }


    /**
     * 格式化属性
     * @param $arr
     * @return array
     */
    function attr_format($arr)
    {
        $data = [];
        $res = [];
        $count = count($arr);
        if ($count > 1) {
            for ($i = 0; $i < $count - 1; $i++) {
                if ($i == 0) $data = $arr[$i]['detail'];
                //替代变量1
                $rep1 = [];
                foreach ($data as $v) {
                    foreach ($arr[$i + 1]['detail'] as $g) {
                        //替代变量2
                        $rep2 = ($i != 0 ? '' : $arr[$i]['value'] . '_$_') . $v . '-$-' . $arr[$i + 1]['value'] . '_$_' . $g;
                        $tmp[] = $rep2;
                        if ($i == $count - 2) {
                            foreach (explode('-$-', $rep2) as $k => $h) {
                                //替代变量3
                                $rep3 = explode('_$_', $h);
                                //替代变量4
                                $rep4['detail'][$rep3[0]] = isset($rep3[1]) ? $rep3[1] : '';
                            }
                            if ($count == count($rep4['detail']))
                                $res[] = $rep4;
                        }
                    }
                }
                $data = isset($tmp) ? $tmp : [];
            }
        } else {
            $dataArr = [];
            foreach ($arr as $k => $v) {
                foreach ($v['detail'] as $kk => $vv) {
                    $dataArr[$kk] = $v['value'] . '_' . $vv;
                    $res[$kk]['detail'][$v['value']] = $vv;
                }
            }
            $data[] = implode('-', $dataArr);
        }
        return [$data, $res];
    }

    //过滤掉emoji表情
    function filter_emoji($str)
    {
        $str = preg_replace_callback('/./u', function (array $match) {
            return strlen($match[0]) >= 4 ? '' : $match[0];
        }, $str);
        return $str;
    }

/**
 * 高德经纬度改百度经纬度
 * @param $lng 经度
 * @param $lat 纬度
 * @return mixed
 */
    function bd_encrypt($lng, $lat)
    {
        $x_pi = 3.14159265358979324 * 3000.0 / 180.0;
        $x = $lng;
        $y = $lat;
        $z = sqrt($x * $x + $y * $y) - 0.00002 * sin($y * $x_pi);
        $theta = atan2($y, $x) - 0.000003 * cos($x * $x_pi);

        $data['lng'] = $z * cos($theta) + 0.0065;
        $data['lat'] = $z * sin($theta) + 0.006;
        return $data;
    }


    /**
     * 验证滑块1次验证
     * @param string $token
     * @param string $pointJson
     * @return bool
     */
    function aj_captcha_check_one(string $captchaType, string $token, string $pointJson)
    {
        aj_get_serevice($captchaType)->check($token, $pointJson);
        return true;
    }

    /**
     * 验证滑块2次验证
     * @param string $token
     * @param string $pointJson
     * @return bool
     */
    function aj_captcha_check_two(string $captchaType, string $captchaVerification )
    {
        aj_get_serevice($captchaType)->verificationByEncryptCode($captchaVerification);
        return true;
    }



    function validateIDCard(string $idcard)
    {
        if(empty($idcard)){
            return false;
        }else{
            $idcard = strtoupper($idcard); # 如果是小写x,转化为大写X
            if(strlen($idcard) != 18 && strlen($idcard) != 15){
                return false;
            }
            # 如果是15位身份证，则转化为18位
            if(strlen($idcard) == 15){
                # 如果身份证顺序码是996 997 998 999，这些是为百岁以上老人的特殊编码
                if (array_search(substr($idcard, 12, 3), array('996', '997', '998', '999')) !== false) {
                    $idcard = substr($idcard, 0, 6) . '18' . substr($idcard, 6, 9);
                } else {
                    $idcard = substr($idcard, 0, 6) . '19' . substr($idcard, 6, 9);
                }
                # 加权因子
                $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
                # 校验码对应值
                $code = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
                $checksum = 0;
                for ($i = 0; $i < strlen($idcard); $i++) {
                    $checksum += substr($idcard, $i, 1) * $factor[$i];
                }
                $idcard = $idcard . $code[$checksum % 11];
            }
            # 验证身份证开始
            $IDCardBody = substr($idcard, 0, 17); # 身份证主体
            $IDCardCode = strtoupper(substr($idcard, 17, 1)); # 身份证最后一位的验证码

            # 加权因子
            $factor = array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
            # 校验码对应值
            $code = array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
            $checksum = 0;
            for ($i = 0; $i < strlen($IDCardBody); $i++) {
                $checksum += substr($IDCardBody, $i, 1) * $factor[$i];
            }
            $validateIdcard = $code[$checksum % 11];    # 判断身份证是否合理
            if($validateIdcard != $IDCardCode){
                return false;
            }else{
                return true;
            }
        }

}