(PHP Extension) Google Maps Geolocation Request

Demonstrates how make a Google Maps Geolocation REST API request.

Chilkat PHP Downloads PHP Extension for Windows, Linux, MacOS, Alpine Linux, Solaris

<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

// This example duplicates the following CURL request:
// curl -d @your_filename.json -H "Content-Type: application/json" -i "https://www.googleapis.com/geolocation/v1/geolocate?key=YOUR_API_KEY"

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

$rest = new CkRest();

// Connect to the Google API REST server.
$bTls = true;
$port = 443;
$bAutoReconnect = true;
$success = $rest->Connect('www.googleapis.com',$port,$bTls,$bAutoReconnect);

// Add the Content-Type request header.
$rest->AddHeader('Content-Type','application/json');

// Add your API key as a query parameter
$rest->AddQueryParam('key','YOUR_API_KEY');

// The JSON query is contained in the body of the HTTP POST.
// This is a sample query (which we'll dynamically build in this example)
// { 
//  "homeMobileCountryCode": 310,
//  "homeMobileNetworkCode": 260,
//  "radioType": "gsm",
//  "carrier": "T-Mobile",
//  "cellTowers": [
//   {
//    "cellId": 39627456,
//    "locationAreaCode": 40495,
//    "mobileCountryCode": 310,
//    "mobileNetworkCode": 260,
//    "age": 0,
//    "signalStrength": -95
//   }
//  ],
//  "wifiAccessPoints": [
//   { 
//    "macAddress": "01:23:45:67:89:AB",
//    "signalStrength": 8,
//    "age": 0,
//    "signalToNoiseRatio": -65,
//    "channel": 8
//   },
//   { 
//    "macAddress": "01:23:45:67:89:AC",
//    "signalStrength": 4,
//    "age": 0
//   }
//  ]
// }

$json = new CkJsonObject();
$json->AppendInt('homeMobileCountryCode',310);
$json->AppendInt('homeMobileNetworkCode',260);
$json->AppendString('radioType','gsm');
$json->AppendString('carrier','T-Mobile');
// aCellTowers is a CkJsonArray
$aCellTowers = $json->AppendArray('cellTowers');
$aCellTowers->AddObjectAt(0);
// oCellTower is a CkJsonObject
$oCellTower = $aCellTowers->ObjectAt(0);
$oCellTower->AppendInt('cellId',39627456);
$oCellTower->AppendInt('locationAreaCode',40495);
$oCellTower->AppendInt('mobileCountryCode',310);
$oCellTower->AppendInt('mobileNetworkCode',260);
$oCellTower->AppendInt('age',0);
$oCellTower->AppendInt('signalStrength',-95);

// aWifi is a CkJsonArray
$aWifi = $json->AppendArray('wifiAccessPoints');
$aWifi->AddObjectAt(0);
// oPoint is a CkJsonObject
$oPoint = $aWifi->ObjectAt(0);
$oPoint->AppendString('macAddress','01:23:45:67:89:AB');
$oPoint->AppendInt('signalStrength',8);
$oPoint->AppendInt('age',0);
$oPoint->AppendInt('signalToNoiseRatio',-65);
$oPoint->AppendInt('channel',8);

$aWifi->AddObjectAt(1);
// oPoint is a CkJsonObject
$oPoint = $aWifi->ObjectAt(1);
$oPoint->AppendString('macAddress','01:23:45:67:89:AC');
$oPoint->AppendInt('signalStrength',4);
$oPoint->AppendInt('age',0);

$responseJson = $rest->fullRequestString('POST','/geolocation/v1/geolocate',$json->emit());
if ($rest->get_LastMethodSuccess() != true) {
    print $rest->lastErrorText() . "\n";
    exit;
}

// When successful, the response code is 200.
if ($rest->get_ResponseStatusCode() != 200) {
    // Examine the request/response to see what happened.
    print 'response status code = ' . $rest->get_ResponseStatusCode() . "\n";
    print 'response status text = ' . $rest->responseStatusText() . "\n";
    print 'response header: ' . $rest->responseHeader() . "\n";
    print 'response JSON: ' . $responseJson . "\n";
    print '---' . "\n";
    print 'LastRequestStartLine: ' . $rest->lastRequestStartLine() . "\n";
    print 'LastRequestHeader: ' . $rest->lastRequestHeader() . "\n";
    exit;
}

$json->put_EmitCompact(false);
print 'JSON request body: ' . $json->emit() . "\n";

// The JSON response should look like this:
// { 
//  "location": {
//   "lat": 37.4248297,
//   "lng": -122.07346549999998
//  },
//  "accuracy": 1145.0
// }

print 'JSON response: ' . $responseJson . "\n";

$jsonResp = new CkJsonObject();
$jsonResp->Load($responseJson);

// jsonLoc is a CkJsonObject
$jsonLoc = $jsonResp->ObjectOf('location');
// Any JSON value can be obtained as a string..
$latitude = $jsonLoc->stringOf('lat');
print 'latitude = ' . $latitude . "\n";
$longitude = $jsonLoc->stringOf('lng');
print 'longitude = ' . $longitude . "\n";

$accuracy = $jsonResp->stringOf('accuracy');
print 'accuracy = ' . $accuracy . "\n";

?>