WeChat Webページでユーザーの基本情報を取得する方法

//获取令牌
public function getAccessToken(){
	
	//指定保存文件位置
	if(!is_dir('./access_token/')){
		mkdir(iconv("GBK","UTF-8",'./access_token/'),0777,true); 
	}
	$file = './access_token/token';
	if(file_exists($file)){
		$content = file_get_contents($file);
		$cont = json_decode($content);
		if( (time()-filemtime($file)) < $cont->expires_in){   //当前时间-文件创建时间<token过期时间
			return $cont->access_token;
		}
	}
	
	$curl = &#39;https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=&#39;.$this->appid.&#39;&secret=&#39;.$this->appsecret;
	$content = $this->_request($curl);
	file_put_contents($file,$content);
	$cont = json_decode($content);
	return $cont->access_token;

}

/**
 * 通过openid拉取用户信息
 * @param  string $openid [description]
 * @return [type]         [description]
 */
public function getUserInfo($openid=&#39;&#39;){
	if(!$openid) return false;
	$access_token = $this->getAccessToken();
	$urlStr = &#39;https://api.weixin.qq.com/cgi-bin/user/info?access_token=%s&openid=%s&lang=zh_CN&#39;;
	$url = sprintf($urlStr,$access_token,$openid);
	$result = json_decode($this->_request($url),true);
	return $result;
}