<?php
/**
* 关注公众号回调事件操作
* 或者根据openid获取用户信息
*
* $obj = new Follow();
* $res = $obj->getUserinfo(..);
*
*/
class Follow {
private $appid=''; //公众号在微信的appid
private $secret =''; //公众号在微信的app secret
/*初始化数据*/
public function __construct(){
$this->appid = web_config('appid');
$this->secret = web_config('secret');
}
/**
* 获取用户信息
*/
public function getUserinfo($param) {
$access_token = $this->getAccessToken();
$url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token={$access_token}&openid={$param['FromUserName']}&lang=zh_CN";
$userinfo = $this->httpGet($url);
$userinfo = json_decode($userinfo);
p($userdata);
}
/**
* 获取access_token
*/
private function getAccessToken() {
$data = json_decode($this->get_php_file("access_token.php"));
if ($data->expire_time < time()) {
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appid&secret=$this->secret";
$res = json_decode($this->httpGet($url));
$access_token = $res->access_token;
if ($access_token) {
$data->expire_time = time() + 7000;
$data->access_token = $access_token;
$this->set_php_file("access_token.php", json_encode($data));
}
} else {
$access_token = $data->access_token;
}
return $access_token;
}
/**
* 请求url
* @param $url url地址
*/
private function httpGet($url) {
$curl = curl_init();
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_TIMEOUT, 500);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true);
curl_setopt($curl, CURLOPT_URL, $url);
$res = curl_exec($curl);
curl_close($curl);
return $res;
}
/**
* 获取缓存文件
* @param $filename 文件名称
*/
private function get_php_file($filename) {
return trim(substr(file_get_contents(__DIR__.'/'.$filename), 15));
}
/**
* 保存缓存文件
* @param $filename 文件名称
* @param $content 保存内容
*/
private function set_php_file($filename, $content) {
$fp = fopen(__DIR__.'/'.$filename, "w");
fwrite($fp, "<?php exit();?>" . $content);
fclose($fp);
}
}
