PHP小程序获取二维码

//获取token
public function getAccessToken($appId,$appSecret)
{// 请求API获取 access_token$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid={$this->appId}&secret={$this->appSecret}";$result = $this->get($url);$data = json_decode($result, true);$access_token = $data['access_token'];return $access_token ;
}public function get($url)
{$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_HEADER, 0);curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); // https请求 不验证证书和hosts$result = curl_exec($curl);curl_close($curl);return $result;
}public function post($url, $data = [])
{$header = ['Content-type: application/json;'];$curl = curl_init();curl_setopt($curl, CURLOPT_URL, $url);curl_setopt($curl, CURLOPT_HTTPHEADER, $header);curl_setopt($curl, CURLOPT_HEADER, false);curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);curl_setopt($curl, CURLOPT_POST, TRUE);curl_setopt($curl, CURLOPT_POSTFIELDS, $data);$result = curl_exec($curl);curl_close($curl);return $result;
}//获取二维码，并保存
public function getQrcode($appId,$appSecret)
{// 微信接口url$access_token = $this->getAccessToken($appId,$appSecret);$url = "https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token={$access_token}";// 构建请求$data = ['scene'=>'user_id:140','width'=>530,'page'=>'pages/index/index'];// 返回结果$result = $this->post($url, json_encode($data, JSON_UNESCAPED_UNICODE));if (!strpos($result, 'errcode')) {$savePath = "aa.png";file_put_contents($savePath, $result);return $savePath;}}