微信生成二维码 PHP

<?php
/**
* Created by PhpStorm.
* User: liyiming
* Date: 2019/8/8
* Time: 14:23
*/
# 生成二维码
class WxTCode{
protected $appid = '';
protected $secret = '';protected $access_tokens = "";
public function __construct($appid,$secret){
$this->appid = $appid;
$this->secret = $secret;
$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . $this->appid . "&secret=" . $this->secret . "";
$result = $this->curl_post($url);
$this->access_tokens = $result['access_token'];
} public function ShowCode(){
$rs = $this->getTemporaryQrcode($this->access_tokens, 123);
$ticket = $rs['ticket'];
$qrcode = "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=" . $ticket . "";
# 当前页直接显示
Header("Location:$qrcode");
} /**
* 生成二维码
* @param $access_tokens
* @param $orderId
* @return mixed
*/
public function getTemporaryQrcode($access_tokens, $orderId){
$url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=" . $access_tokens . "";
# 生成二维码需要的参数
$qrcode = '{"expire_seconds": 1800, "action_name": "QR_LIMIT_SCENE", "action_info": {"scene": {"scene_id": ' . $orderId . '}}}';
$result = $this->curl_post($url, $qrcode);
return $result;
} /**
* @param $url
* @param null $data
* @param string $method
* @param bool $https
* @return mixed
*/
private function curl_post($url, $data=null,$method='POST', $https=true){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); if($https){
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
if($method == 'POST'){
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
}
$content = curl_exec($ch);
curl_close($ch);
return json_decode($content,true);
}
}
}$Wxfollow = new WxTCode('appid','secret');
$follow = $Wxfollow->ShowCode();