PHP：尝试继续json字符串时没有响应

Question

PS：此代码是从Getting visitors country from their IP修改的

我尝试使用https://api.ipdata.co/的ipdata服务，但是当我尝试使用PHP解码json时，没有任何反应。即使我试图打印出api响应。任何人都可以帮助我哈哈..

php代码：

function ip_info($ip = NULL, $purpose = "location", $deep_detect = TRUE) {
$output = NULL;
if (filter_var($ip, FILTER_VALIDATE_IP) === FALSE) {
    $ip = $_SERVER["REMOTE_ADDR"];
    if ($deep_detect) {
        if (filter_var(@$_SERVER['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP))
            $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
        if (filter_var(@$_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP))
            $ip = $_SERVER['HTTP_CLIENT_IP'];
    } else {
        echo "error [2]";
    }
} else {
    echo "error [1]";
}
$rdata = file_get_contents("http://api.ipdata.co/" . $ip);
echo $rdata;
$ipdat = @json_decode($rdata);
echo $ipdat;
$output = @$ipdat->country_code;
return $output;
}

echo ip_info("Visitor", "country");

Answer 1

试试这个

function ip_info($ip = NULL, $deep_detect = TRUE) {
    if ($ip == NULL || !filter_var($ip, FILTER_VALIDATE_IP)) {
        $ip = $_SERVER["REMOTE_ADDR"];
        if ($deep_detect) {
            if (filter_var(@$_SERVER['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP)){
                $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
            }
            if (filter_var(@$_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP)){
                $ip = $_SERVER['HTTP_CLIENT_IP'];
            }
        }
    }

    $ch = curl_init("http://ip-api.com/json/".$ip);
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, 5);
    $result = curl_exec($ch);
    curl_close($ch);
    $result = json_decode($result, true);

    if($result['status'] == "fail"){
        $result = FALSE; /* If an Error has come back, you can use $result['message'] to get why. */
    } 
    else { $result =  $result['countryCode']; } // If Sucess
    return $result;
}

Answer 2

我们昨天早上发生了停电事故，这可能是造成这种情况的原因。我已经测试了以下代码，它对我有用。如果您有任何问题，请告诉我。

function ip_info($ip = NULL, $deep_detect = TRUE) {
    if ($ip == NULL || !filter_var($ip, FILTER_VALIDATE_IP)) {
        $ip = $_SERVER["REMOTE_ADDR"];
        if ($deep_detect) {
            if (filter_var(@$_SERVER['HTTP_X_FORWARDED_FOR'], FILTER_VALIDATE_IP)){
                $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
            }
            if (filter_var(@$_SERVER['HTTP_CLIENT_IP'], FILTER_VALIDATE_IP)){
                $ip = $_SERVER['HTTP_CLIENT_IP'];
            }
        }
    }

    $ch = curl_init("https://api.ipdata.co/".$ip);
    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, 5);
    $result = curl_exec($ch);
    curl_close($ch);
    $result = json_decode($result, true);

    $result =  $result['country_code'];
    return $result;
}
var_dump(ip_info('1.1.1.1'));
//string(2) "AU"