Geocoder

geocode-php.php

<?php

// Check to ensure this file is included in Joomla!
defined('_JEXEC') or die();


// latlng
$latitude  = JRequest::getString('tbl_locations___lat');
$longitude = JRequest::getString('tbl_locations___long');

// address
$addressString = compileAddressString();

// geo response
$geoResponse = getGeo($addressString);

// pure latlng object
$latlng = getLatLng($geoResponse);

// set the fields and let this continue on it's way
setLatLngFields($latlng);


function getLatLng($geoResponse)
{
	$latlng = $geoResponse;

	$location = $latlng->results[0]->geometry->location;

	// for some reason this is blank so exit early
	if ($location == '' || $location === false)
	{
		return false;
	}
	return $location;
}



function compileAddressString()
{
	$address = JRequest::getString('tbl_locations___location_address');
	$city = JRequest::getString('tbl_locations___location_city');
	$state = JRequest::getString('tbl_locations___location_state');
	$postcode = JRequest::getString('tbl_locations___location_zip');
	$country = JRequest::getString('tbl_locations___location_country');

	// add all our parts up
	$compileAddress = array($address, $city, $state, $postcode, $country);

	// google friendly version
	// ex: 211+washington+street,new+smyrna+beach,fl,32168,united+states
	$geoFriendlyAddress = implode(',', $compileAddress);
	$geoFriendlyAddress = str_replace(' ', '+', $geoFriendlyAddress); 

	// if we don't have a complete string we should return false
	if ($geoFriendlyAddress == '')
	{
		return false;
	}

	// return the string version of our address
	return urlencode($geoFriendlyAddress);
}

function getGeo($address)
{
	$googleGeocodeUrl = 'https://maps.googleapis.com/maps/api/geocode/json?';

	$requestUrl = $googleGeocodeUrl . 'sensor=false&address=' . $address;

	$curl = curl_init();
	curl_setopt($curl, CURLOPT_URL, $requestUrl);
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
    $contents = json_decode(curl_exec($curl));
    curl_close($curl);

    if (! $contents) 
    {
    	return false;
    }

    if ($contents->status != 'OK')
    {
    	return false;
    }

   	return $contents;
}

function setLatLngFields($latlng)
{
	$db = JFactory::getDbo();

	$recordID = JRequest::getInt('tbl_locations___id');
	$query = 'UPDATE tbl_locations SET tbl_locations.lat="' . $latlng->lat . '", tbl_locations.long="' . $latlng->lng . '" WHERE id=' . $recordID;

	$db->setQuery($query);
	$result = $db->query();

}


?>