jiaoyi-webman/app/extra/ip2region/IpSearch.php

<?php

namespace app\extra\ip2region;

use app\extra\ip2region\xdb\IPv4;
use app\extra\ip2region\xdb\Searcher;
use app\extra\ip2region\xdb\SearchIp;

class IpSearch
{

    /**
     * @param string $ip
     * @return array
     */
    public function getIpArea(string $ip = ""): array
    {
        $dbFile = __DIR__ . '/ip2region_v4.xdb';
        $version = IPv4::default();
        $searcher = Searcher::newWithFileOnly($version,$dbFile);
        $region = $searcher->search($ip);
        return explode("|",$region);
    }

}