function test()
    {
        $a = [
            1939165,
            1935657,
        ];
        $b = array_unique($a);
        $c = array_diff_assoc($a, $b);
        if ($c) {
            echo var_export($c, 1) . PHP_EOL;
        }

        $provinces = [
            '山东','江苏','安徽','四川','陕西','湖北','北京','天津','上海','广东','广西','浙江','河南','甘肃','吉林',
            '辽宁','内蒙古','新疆','黑龙江','福建','河北','重庆','海南','江西','山西','湖南','青海','贵州','宁夏','云南','西藏'
        ];
        $i = 0;
        $count = count($b);
        foreach ($b as $item) {
            $i++;
            $url = 'https://www.chahaoba.com/search_es?input=' . $item;
            $html = file_get_contents($url);
            $reg1 = "/<a .*?>(.*?)<\/a>/";
            preg_match('/<li>归属省份地区：(.*)<\/li>/isU', $html, $matchCity);
            preg_match('/<li>电信运营商：(.*)<\/li>/isU', $html, $matchIsp);
            if (empty($matchCity)) {
                echo "次数：{$i}/{$count} {$item} 查无数据" . PHP_EOL;
                sleep(10);
                continue;
            }
            echo "次数：{$i}/{$count} {$item} OK" . PHP_EOL;

            //城市
            $temp = explode('、', $matchCity[1]);
            preg_match($reg1, $temp[0], $mCity);
            $city = $mCity[1];
            if ($temp[1]) {
                preg_match($reg1, $temp[1], $mProvince);
                $province = $mProvince[1];
            } else {
                $province = $city;
            }

            if (!in_array($province, $provinces)) {
                list($city, $province) = array($province, $city);
            }

            // 运营商
            preg_match($reg1, $matchIsp[1], $mIsp);
            $isp = $mIsp[1];

            echo "($url, $province, $city, $isp)" . PHP_EOL;
            if ($i !== $count) {
                sleep(10);
            }
        }

        echo "OK";
    }