PHP 通过腾讯地图 API，获取 IP 地址的经纬度和城市信息

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<?php
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    $ip = '14.17.101.214';
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    $key = 'ALWBZ-BO6CU-7YKVS-BIXH2-55VX5-RKBED';
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    $map = getLocationInfo($ip,$key);
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    echo "当前IP地址：".$map['result']['ip'];
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    echo "当前纬度:".$map['result']['location']['lat']."经度:".$map['result']['location']['lng'];
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    function getLocationInfo($ip,$key){
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        //$ip  用户的当前IP地址
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        //$key 腾讯地图开发者需要的KEY秘钥，自己去注册一下吧
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        //$url 腾讯地图API请求接口地址
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        $url = 'https://apis.map.qq.com/ws/location/v1/ip?ip='.$ip.'&key='.$key;
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        $info = file_get_contents($url);    //GET请求，记住这里必须要用GET哦
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        $info = json_decode($info, true);  //解码JSON并返回数组将
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        return $info;   //返回请求结果
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    };
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?>

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当前IP地址：14.17.101.214当前纬度:22.54286经度:114.05956

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{
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  "status": 0,
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  "message": "Success",
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  "request_id": "c8c220d31e2349679704b1b0e288e03d",
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  "result": {
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    "ip": "14.17.101.214",
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    "location": { "lat": 22.54286, "lng": 114.05956 },
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    "ad_info": {
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      "nation": "中国",
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      "province": "广东省",
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      "city": "深圳市",
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      "district": "",
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      "adcode": 440300
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    }
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  }
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}