tipdw/api/index.php

<?php
error_reporting(0);
date_default_timezone_set('PRC');
header('Access-Control-Allow-Origin: *');
header('Content-type: application/json');
// 应用API KEY
const API_KEY = "";
function curl_get($url){
    $header = array(
        'Accept: application/json',
    );
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_HEADER, 0);
    curl_setopt($curl, CURLOPT_TIMEOUT, 1);
    curl_setopt($curl, CURLOPT_TIMEOUT_MS, 500);
    curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    $data = curl_exec($curl);

    // 显示错误信息
    if (curl_error($curl)) {
        return "Error: " . curl_error($curl);
    } else {
        // 打印返回的内容
        return ($data);
    }
    curl_close($curl);
}

function is_domain($domain){
    $pat = "/^(\w+:\/\/)?([^\/]+)/i";
    if(preg_match($pat, $domain, $matches)){
        if($matches[2]){
            return 1;
        }else{
            return 0;
        }
    }else{
        return 0;
    }
}

$ip = isset($_GET["ip"])?$_GET["ip"]:'';
if(!filter_var($ip, FILTER_VALIDATE_IP)){
    //非合法IP则判断是否是域名
    if(is_domain($ip)){
        $ip = gethostbyname($ip); //是域名则获取该域名的IP
    }else{
        //既非IP也非域名，此处做错误任务处理
    }
}
$url = sprintf("https://apis.map.qq.com/ws/location/v1/ip?ip=%s&key=%s", urlencode($ip), API_KEY);
echo curl_get($url);