Check whether the IP belongs to china.

IPCheck.php

<?php
class IP_Check{
    private  $ip_china = array(
        array(167772160,184549375),     //10.0.0.0~10.255.255.255
        array(2886729728,2887778303),   //172.16.0.0~172.31.255.255
        array(3232235520,3232301055),   //192.168.0.0~192.168.255.255
        array(17563648, 17825791),
        array(18350080, 18874367),
        array(453509120, 455081983),
        array(455344128, 456130559),
        array(456294400, 456327167),
        array(456572928, 456589311),
        array(461373440, 461504511),
        array(462422016, 462487551),
        array(462684160, 463470591),
        array(465043456, 467927039),
        array(973996032, 974782463),
        array(975044608, 977272831),
        array(977403904, 977534975),
        array(977567744, 977600511),
        array(978452480, 978583551),
        array(978796544, 978812927),
        array(979599360, 979763199),
        array(980680704, 980942847),
        array(981467136, 981991423),
        array(982515712, 982581247),
        array(983171072, 983302143),
        array(985661440, 987758591),
        array(988807168, 989855743),
        array(991952896, 995360767),
        array(996868096, 997195775),
        array(999751680, 999784447),
        array(1000013824, 1000079359),
        array(1001127936, 1001390079),
        array(1002373120, 1006632959),
        array(1006632960, 1008730111),
        array(1010237440, 1010302975),
        array(1010761728, 1010827263),
        array(1017118720, 1019215871),
        array(1019346944, 1019478015),
        array(1019740160, 1021313023),
        array(1021837312, 1021968383),
        array(1022033920, 1022099455),
        array(1022722048, 1022754815),
        array(1022820352, 1022885887),
        array(1023148032, 1023213567),
        array(1023246336, 1023279103),
        array(1023344640, 1023410175),
        array(1023692800, 1023696895),
        array(1023717376, 1023721471),
        array(1023975424, 1023979519),
        array(1025245184, 1025277951),
        array(1025343488, 1025376255),
        array(1026392064, 1026408447),
        array(1026523136, 1026539519),
        array(1026555904, 1027080191),
        array(1029160960, 1029177343),
        array(1031798784, 1035993087),
        array(1038614528, 1039007743),
        array(1039138816, 1039400959),
        array(1845886976, 1846018047),
        array(1846542336, 1846804479),
        array(1848115200, 1848377343),
        array(1848639488, 1848705023),
        array(1848836096, 1849032703),
        array(1849163776, 1849819135),
        array(1850212352, 1850343423),
        array(1850408960, 1850490879),
        array(1850523648, 1850572799),
        array(1850736640, 1851523071),
        array(1851654144, 1853882367),
        array(1855455232, 1855848447),
        array(1856372736, 1856503807),
        array(1856815104, 1856843775),
        array(1856847872, 1856864255),
        array(1856880640, 1856888831),
        array(1857028096, 1860173823),
        array(1860435968, 1860698111),
        array(1860706304, 1860714495),
        array(1860960256, 1861091327),
        array(1861222400, 1862270975),
        array(1862270976, 1866465279),
        array(1866596352, 1866661887),
        array(1866711040, 1866715135),
        array(1866743808, 1866751999),
        array(1866989568, 1867513855),
        array(1867841536, 1867907071),
        array(1868283904, 1868292095),
        array(1869611008, 1870004223),
        array(1870086144, 1870110719),
        array(1870135296, 1870462975),
        array(1870528512, 1873281023),
        array(1873412096, 1873477631),
        array(1873543168, 1874329599),
        array(1874460672, 1874591743),
        array(1874853888, 1876426751),
        array(1876787200, 1876885503),
        array(1876946944, 1876947967),
        array(1876948992, 1876950015),
        array(1876951040, 1877475327),
        array(1877696512, 1877704703),
        array(1877712896, 1877721087),
        array(1879048192, 1883504639),
        array(1883832320, 1884028927),
        array(1884291072, 1884815359),
        array(1886224384, 1886257151),
    );

    public function Is_ChinaIP($ip){
        if (is_numeric($ip)) {
            $ip = long2ip($ip);
        }

        $ip = sprintf("%u", ip2long($ip));
        $is_china = false;
        foreach($this->ip_china as $rule){
            if($ip >= $rule[0] && $ip <= $rule[1]){
                $is_china = true;
                break;
            }
        }

        return $is_china;
    }
}

$check = new IP_Check();


var_dump($check->Is_ChinaIP('8.35.201.115'));       //USA
var_dump($check->Is_ChinaIP('61.135.152.218'));     //China