function getCity($string)
{
if (($response = geocodeJSON($string)) == null) {
return null;
}
$city = getCityFromGeocodeResponse($response);
$state = getStateFromGeocodeResponse($response);
return "{$city}, {$state}";
}
private static function getGeocodeJSON($location)
{
$geocode = geocodeJSON($location);
if (is_null($geocode)) {
return null;
}
// Store the geocode for the location.
GeocodeModel::record($location, $geocode);
return $geocode;
}
function geocodeJSON($string, $attempts = 0)
{
$string = str_replace(" ", "+", urlencode($string));
$details_url = "https://maps.googleapis.com/maps/api/geocode/json?address=" . $string . "&sensor=false&key=AIzaSyBir2K0y4wPMmcMNKElShQFlb95fvvYd8E";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $details_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$response = json_decode(curl_exec($ch), true);
curl_close($ch);
// If Status Code is ZERO_RESULTS, OVER_QUERY_LIMIT, REQUEST_DENIED or INVALID_REQUEST
if ($response['status'] != 'OK') {
if ($response['status'] == 'OVER_QUERY_LIMIT' && $attempts < 3) {
sleep(2);
return geocodeJSON($string, $attempts + 1);
}
return null;
}
return $response;
}
function getCity($string)
{
if (($response = geocodeJSON($string)) == null) {
return null;
}
$address_components = $response['results'][0]['address_components'];
$city = null;
$state = null;
foreach ($address_components as $c) {
if (in_array("locality", $c['types'])) {
$city = $c['short_name'];
}
if (in_array("administrative_area_level_1", $c['types'])) {
$state = $c['short_name'];
}
}
if ($city == null or $state == null) {
return null;
}
return "{$city}, {$state}";
}