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<?php |
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namespace Geocoder; |
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class Geocoder |
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{ |
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const API_URL = 'http://maps.google.com/maps/api/geocode'; |
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const VALID_OUTPUT_FORMAT = ['json', 'xml']; |
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private $apiKey; |
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public function __construct($apiKey = '') |
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{ |
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$this->setApiKey($apiKey); |
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} |
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/** |
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* @return string |
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*/ |
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public function getApiKey() |
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{ |
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return $this->apiKey; |
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} |
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/** |
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* @param string $apiKey |
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*/ |
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public function setApiKey($apiKey) |
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{ |
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$this->apiKey = $apiKey; |
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} |
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/** |
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* @param $address |
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* @param string $region |
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* @param string $outputFormat |
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* |
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* @throws \Exception |
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* |
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* @return string |
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*/ |
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public function geocode($address, $region = '', $outputFormat = 'json') |
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{ |
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if ($this->validateOutputFormat($outputFormat) !== true) { |
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throw new \Exception("'{$outputFormat}' is not a valid format"); |
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} |
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return file_get_contents($this->generateRequestUrl($address, $region, $outputFormat)); |
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} |
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/** |
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* @param $address |
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* |
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* @return array |
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*/ |
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public function getLatLng($address) |
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{ |
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$result = $this->geocode($address); |
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$result = json_decode($result, true); |
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if ($result['status'] !== 'OK') { |
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return; |
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} |
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$latLng = []; |
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foreach ($result['results'] as $result) { |
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$latLng[] = [ |
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'lat' => $result['geometry']['location']['lat'], |
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'lng' => $result['geometry']['location']['lng'], |
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]; |
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} |
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return $latLng; |
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} |
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/** |
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* @param $format |
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* |
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* @return bool |
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*/ |
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private function validateOutputFormat($format) |
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{ |
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if (in_array($format, self::VALID_OUTPUT_FORMAT)) { |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param $address |
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* @param string $region |
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* @param string $outputFormat |
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* @param bool $sensor |
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* |
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* @return string |
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*/ |
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private function generateRequestUrl($address, $region = '', $outputFormat = 'json', $sensor = false) |
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{ |
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$baseUrl = self::API_URL.'/'.$outputFormat.'?address='.urlencode($address).'&sensor='.$sensor; |
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if (!empty($region)) { |
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$baseUrl .= "®ion={$region}"; |
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} |
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if (!empty($this->getApiKey())) { |
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$baseUrl .= '&key='.$this->getApiKey(); |
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} |
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return $baseUrl; |
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} |
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} |
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iranianpep /
geocoder
