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<?php |
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namespace JeroenDesloovere\Geolocation; |
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/** |
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* Geolocation |
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* |
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* Get latitude/longitude or address using Google Maps API |
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* |
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* @author Jeroen Desloovere <[email protected]> |
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*/ |
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class Geolocation |
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{ |
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// API URL |
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const API_URL = 'maps.googleapis.com/maps/api/geocode/json'; |
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private $api_key; |
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private $https; |
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public function __construct($api_key = null, $https = false) |
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{ |
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$this->https = $https; |
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if ($api_key) { |
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$this->api_key = $api_key; |
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$this->https = true; |
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} |
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} |
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/** |
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* Do call |
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* |
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* @return object |
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* @param array $parameters |
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*/ |
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protected function doCall($parameters = array()) |
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{ |
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// check if curl is available |
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if (!function_exists('curl_init')) { |
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// throw error |
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throw new GeolocationException('This method requires cURL (http://php.net/curl), it seems like the extension isn\'t installed.'); |
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} |
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// define url |
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$url = ($this->https ? 'https://' : 'http://') . self::API_URL . '?'; |
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// add every parameter to the url |
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foreach ($parameters as $key => $value) $url .= $key . '=' . urlencode($value) . '&'; |
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// trim last & |
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$url = trim($url, '&'); |
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if ($this->api_key) { |
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$url .= '&key=' . $this->api_key; |
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} |
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// init curl |
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$curl = curl_init(); |
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// set options |
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curl_setopt($curl, CURLOPT_URL, $url); |
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); |
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curl_setopt($curl, CURLOPT_TIMEOUT, 10); |
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if (ini_get('open_basedir') == '' && ini_get('safe_mode' == 'Off')) curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); |
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// execute |
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$response = curl_exec($curl); |
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// fetch errors |
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$errorNumber = curl_errno($curl); |
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$errorMessage = curl_error($curl); |
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// close curl |
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curl_close($curl); |
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// we have errors |
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if ($errorNumber != '') throw new GeolocationException($errorMessage); |
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// redefine response as json decoded |
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$response = json_decode($response); |
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// return the content |
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return $response->results; |
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} |
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/** |
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* Get address using latitude/longitude |
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* |
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* @return array(label, components) |
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* @param float $latitude |
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* @param float $longitude |
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*/ |
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public function getAddress($latitude, $longitude) |
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{ |
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$addressSuggestions = $this->getAddresses($latitude, $longitude); |
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return $addressSuggestions[0]; |
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} |
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/** |
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* Get possible addresses using latitude/longitude |
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* |
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* @return array(label, street, streetNumber, city, cityLocal, zip, country, countryLabel) |
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* @param float $latitude |
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* @param float $longitude |
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*/ |
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public function getAddresses($latitude, $longitude) |
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{ |
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// init results |
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$addresses = array(); |
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// define result |
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$addressSuggestions = $this->doCall(array( |
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'latlng' => $latitude . ',' . $longitude, |
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'sensor' => 'false' |
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)); |
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// loop addresses |
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foreach ($addressSuggestions as $key => $addressSuggestion) { |
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// init address |
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$address = array(); |
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// define label |
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$address['label'] = isset($addressSuggestion->formatted_address) ? |
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$addressSuggestion->formatted_address : null |
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; |
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// define address components by looping all address components |
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foreach ($addressSuggestion->address_components as $component) { |
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$address['components'][] = array( |
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'long_name' => $component->long_name, |
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'short_name' => $component->short_name, |
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'types' => $component->types |
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); |
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} |
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$addresses[$key] = $address; |
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} |
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return $addresses; |
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} |
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/** |
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* Get coordinates latitude/longitude |
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* |
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* @return array The latitude/longitude coordinates |
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* @param string $street[optional] |
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* @param string $streetNumber[optional] |
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* @param string $city[optional] |
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* @param string $zip[optional] |
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* @param string $country[optional] |
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*/ |
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public function getCoordinates( |
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$street = null, |
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$streetNumber = null, |
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$city = null, |
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$zip = null, |
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$country = null |
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) { |
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// init item |
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$item = array(); |
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// add street |
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if (!empty($street)) $item[] = $street; |
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// add street number |
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if (!empty($streetNumber)) $item[] = $streetNumber; |
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// add city |
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if (!empty($city)) $item[] = $city; |
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// add zip |
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if (!empty($zip)) $item[] = $zip; |
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// add country |
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if (!empty($country)) $item[] = $country; |
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// define value |
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$address = implode(' ', $item); |
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// define result |
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$results = $this->doCall(array( |
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'address' => $address, |
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'sensor' => 'false' |
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)); |
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// return coordinates latitude/longitude |
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return array( |
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'latitude' => array_key_exists(0, $results) ? (float) $results[0]->geometry->location->lat : null, |
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'longitude' => array_key_exists(0, $results) ? (float) $results[0]->geometry->location->lng : null |
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); |
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} |
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} |
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/** |
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* Geolocation Exception |
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* |
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* @author Jeroen Desloovere <[email protected]> |
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*/ |
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class GeolocationException extends \Exception {} |
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