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Current Location Retrieval (PHP)

Kilho, Oh อัปเดตล่าสุด

This uses the geolocation function to get the user’s location. If permission is denied or the browser does not support geolocation, it uses the Naver API to determine the location from the IP address.

Before using this, get an API key from Naver at the address below.
(https://www.ncloud.com/product/applicationService/geoLocation)

<? 
	function makeSignature($secretKey, $method, $baseString, $timestamp, $accessKey)
	{
		$space = ' ';
		$newLine = "\n";
		$hmac = $method.$space.$baseString.$newLine.$timestamp.$newLine.$accessKey;
		$signautue = base64_encode(hash_hmac('sha256', $hmac, $secretKey,true));
		return $signautue;
	}

	if($_POST['order'] == 'geolocation')
	{
		$hostNameUrl = 'https://geolocation.apigw.ntruss.com';
		$requestUrl= '/geolocation/v2/geoLocation';
		$accessKey = 'Please enter your accessKey.';
		$secretKey = 'Please enter your secretKey.';

		$ip = $_SERVER['REMOTE_ADDR'];
		$timestamp = round(microtime(true) * 1000);

		$baseString = $requestUrl.'?ip='.$ip.'&ext=t&responseFormatType=json';

		$signautue = makeSignature($secretKey, 'GET', $baseString, $timestamp, $accessKey);
		$url = $hostNameUrl.$baseString;

		$is_post = false;
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $url);
		curl_setopt($ch, CURLOPT_POST, $is_post);
		curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
		$headers = array();
		$headers[] = 'X-NCP-APIGW-TIMESTAMP: '.$timestamp;
		$headers[] = 'X-NCP-IAM-ACCESS-KEY: '.$accessKey;
		$headers[] = 'X-NCP-APIGW-SIGNATURE-V2: '.$signautue;

		curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
		$response = json_decode(curl_exec ($ch), true);

		if($response['geoLocation'])
		{
			$lat = $response['geoLocation']['lat'];
			$lng = $response['geoLocation']['long'];
		}else{
			$lat = 37.535053;
			$lng = 127.147263;
		}

		echo json_encode(array('latitude'=>$lat, 'longitude'=>$lng));
		exit;
	}

?>
<html lang="ko">
<head>
	<meta charset="UTF-8">
	<title>Calculating location...</title>
</head>
<body>
<div style="width: 100%; text-align: center; display: inline-block; ">
	<p>Calculating your location to ensure a smooth experience.</p>
	<p>Please <font color="RED"><strong>allow</strong></font> access to your location.</p>
</div>

<script>
	function setPositionByGeo(pos)
	{
		document.cookie = "latitude=" + pos.coords.latitude;
		document.cookie = "longitude=" + pos.coords.longitude;

		location.href = "<?=$_GET['url'] ? $_GET['url'] : '/'?>";
	}

	function setPositionByIP()
	{
		var xhr = new XMLHttpRequest();
		var dat = new FormData();

		dat.append("order", "geolocation");

		xhr.open("POST", window.location.pathname);
		xhr.send(dat);

		xhr.onload = function()
		{
			if(xhr.status === 200 || xhr.status === 201)
			{
				var res = JSON.parse(xhr.responseText);

				if(res.latitude&&res.longitude)
				{
					document.cookie = "latitude=" + res.latitude;
					document.cookie = "longitude=" + res.longitude;


					location.href = "<?=$_GET['url'] ? $_GET['url'] : '/'?>";
				}
			}
		};
	}

	window.onload = function() {
		if (navigator.geolocation)
			navigator.geolocation.getCurrentPosition(setPositionByGeo, setPositionByIP);
		else
			setPositionByIP();
	}
</script>
</body>
</html>

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