php 手机定位

手机定位"/>

php 手机定位

最近在做一个手机端的webapp地图应用，而核心内容当然是定位了，但是定位的话有几种方式，IP定位,GPS定位，基站定位（这个貌似webapp用不了）， 那么剩下核心的gps定位和ip定位了，我们知道，html5有定位API，但是该API拿到的GPS数据是硬件坐标，无法直接显示在地图上。 后来上百度LBS云看到有地图IP定位API和GPS坐标转换API，地址： /  百度地图API的调用需要申请KEY，这里就不具体介绍了，直接贴上本人写了两个关键方法，为了方便前台调用，返回数据采用以下格式  

{address: "北京市海淀区西二旗北路",province: "北京市",city: "北京市",street: "西二旗北路",street_number: "",city_code: 131,lng: 116.3207676804,lat: 40.064084055578
}

核心类

<?php/*** @author xialei <xialeistudio@gmail>*/
class map
{private static $_instance;const REQ_GET = 1;const REQ_POST = 2;/*** 单例模式* @return map*/public static function instance(){if (!self::$_instance instanceof self){self::$_instance = new self;}return self::$_instance;}/*** 执行CURL请求* @author: xialei<xialeistudio@gmail>* @param $url* @param array $params* @param bool $encode* @param int $method* @return mixed*/private function async($url, $params = array(), $encode = true, $method = self::REQ_GET){$ch = curl_init();if ($method == self::REQ_GET){$url = $url . '?' . http_build_query($params);$url = $encode ? $url : urldecode($url);curl_setopt($ch, CURLOPT_URL, $url);}else{curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_POST, true);curl_setopt($ch, CURLOPT_POSTFIELDS, $params);}curl_setopt($ch, CURLOPT_REFERER, '百度地图referer');curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X; en-us) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53');curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);$resp = curl_exec($ch);curl_close($ch);return $resp;}/*** ip定位* @param string $ip* @return array* @throws Exception*/public function locationByIP($ip){//检查是否合法IPif (!filter_var($ip, FILTER_VALIDATE_IP)){throw new Exception('ip地址不合法');}$params = array('ak' => '百度地图API KEY','ip' => $ip,'coor' => 'bd09ll'//百度地图GPS坐标);$api = '';$resp = $this->async($api, $params);$data = json_decode($resp, true);//有错误if ($data['status'] != 0){throw new Exception($data['message']);}//返回地址信息return array('address' => $data['content']['address'],'province' => $data['content']['address_detail']['province'],'city' => $data['content']['address_detail']['city'],'district' => $data['content']['address_detail']['district'],'street' => $data['content']['address_detail']['street'],'street_number' => $data['content']['address_detail']['street_number'],'city_code' => $data['content']['address_detail']['city_code'],'lng' => $data['content']['point']['x'],'lat' => $data['content']['point']['y']);}/*** GPS定位* @param $lng* @param $lat* @return array* @throws Exception*/public function locationByGPS($lng, $lat){$params = array('coordtype' => 'wgs84ll','location' => $lat . ',' . $lng,'ak' => '百度地图API KEY','output' => 'json','pois' => 0);$resp = $this->async('/', $params, false);$data = json_decode($resp, true);if ($data['status'] != 0){throw new Exception($data['message']);}return array('address' => $data['result']['formatted_address'],'province' => $data['result']['addressComponent']['province'],'city' => $data['result']['addressComponent']['city'],'street' => $data['result']['addressComponent']['street'],'street_number' => $data['result']['addressComponent']['street_number'],'city_code'=>$data['result']['cityCode'],'lng'=>$data['result']['location']['lng'],'lat'=>$data['result']['location']['lat']);}
}