高德api开发IP定位定位ip判断当前城市地址

$ip = getClientIp();

$ret = getCity($ip);

print_r($ret);

 function getCity($ip){

        $url   = "https://restapi.amap.com/v3/ip";

        $param = [

            'ip' => $ip,

            'key' => '73905ec84f2dccb7aabbdd525685cb4c'

        ];

        $ret   = http($url, $param);

        $data  = json_decode($ret, true);

        return [

'province' => $data['province'],

'city' => $data['city'] 

];

    }

// 获取客户端IP地址

function getClientIp() {

static $ip = NULL;

if ($ip !== NULL) return $ip;

if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) {

$arr = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);

$pos =  array_search('unknown',$arr);

if(false !== $pos) unset($arr[$pos]);

$ip   =  trim($arr[0]);

}elseif (isset($_SERVER['HTTP_CLIENT_IP'])) {

$ip = $_SERVER['HTTP_CLIENT_IP'];

}elseif (isset($_SERVER['REMOTE_ADDR'])) {

$ip = $_SERVER['REMOTE_ADDR'];

}

// IP地址合法验证

$ip = (false !== ip2long($ip)) ? $ip : '0.0.0.0';

return $ip;

}