<?php
/*
* Geo Locator
* YahooGeoLocator.class.php
*
* About class: Class for parsing data from Yahoo GEO locating service. Yahoo API
* has daily limit 50 000 queries, so it is much more interesting for geo tagging
* big packet of data. Service is very precise at least in central Europe but
* unfortunatelly google is more:-/
* More info about Yahoo APIs on YDN: http://developer.yahoo.com/everything.html
*
* @Version: 1.1
* @Release: 2010-12-22
* @Author: Ondrej Podolinsky aka podolinek
* @Contact: podolinek@gmail.com
*
* Copyright (c) 2010, podolinek
* This class is under GPL Licencense Agreement.
*
* I will be pleased for any feedback.)
*
*/
class YahooGeoLocator extends GeoLocator {
const serviceAddress = 'http://where.yahooapis.com/geocode?location=%s&flags=P';//address for calling service
/**
* Initial set of base variables in class
*
* @param string $apiKey - api key for Yahoo API
*/
public function __construct($apiKey = null){
parent::__construct($apiKey);
}
/**
* Search by address/coords in concrete service
*
* @param string $paramVal
* @param string $paramName
* @return array - array with results. $results['error'] if any error.
*/
protected function searchByParam($paramVal,$paramName) {
$url = sprintf(self::serviceAddress,$paramVal);
if(!is_null($this->apiKey))
$url .= '&appid=' . $this->apiKey;
$url .= ($paramName == 'latlng') ? '&gflags=R' : '';
$file = $this->getUrl($url);
$doc = unserialize($file);//service returns data in serialized format
$errNo = (int)$doc['ResultSet']['Error'];
$errMsg = $doc['ResultSet']['ErrorMessage'];
if($errNo == 0){
$results['count'] = $doc['ResultSet']['Found'];
foreach($doc['ResultSet']['Result'] AS $res) {
$results['results'][] = $this->parseResults($res);
}
} else {
$results['error'] = $errMsg;
}
return $results;
}
/**
* Extract address + gps from document
*
* @param array $arr - one address element from service
* @return array - array with result.
*/
protected function parseResults($arr) {
$result['lat'] = (float)$arr['latitude'];
$result['long'] = (float)$arr['longitude'];
$result['street'] = $arr['street']. ' '.$arr['house'];
$result['city'] = $arr['city'];
$result['country'] = $arr['country'];
$result['zip'] = $arr['uzip'];
return $result;
}
}
?>
|
Download
