PHP微信公众平台开发高级篇—生成二维码接口

一、说明

1、这里讲解生成二维码接口（临时二维码和永久二维码）

2、这里给出简单的实现代码，不做详细说明

3、可以参考开发手册：

https://mp./wiki?t=resource/res_main&id=mp1443433542

4、参考视频：

/video/11357

二、代码

/**$url 接口url string*$type 请求类型 string*$res 返回数据类型 string*%$arr post 请求参数 string*/public function http_curl($url,$type='get',$res='json',$arr=''){//1.初始化curl$ch = curl_init();//2.设置curl的参数curl_setopt($ch, CURLOPT_URL, $url);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);if($type == 'post'){curl_setopt($ch, CURLOPT_POST,1);curl_setopt($ch, CURLOPT_POSTFIELDS, $arr);}//3.采集$output = curl_exec($ch);//4.关闭curl_close($ch);if($res=='json'){if(curl_error($ch)){//请求失败，返回错误信息return curl_error($ch);}else{//请求成功，返回错误信息return json_decode($output,true);}}}/**返回access_token *session解决办法 存mysql memcache*/public function getWxAccessToken(){//将access_token 存在session/cookie中if($_SESSION['access_token'] && $_SESSION['expire_time'] > time()){//如果access_token在session中没有过期return $_SESSION['access_token'];}else{//如果access_token在session中不存在或者已经过期$appid = 'wxb20bebb764546087';$appsecret = '64e22d215895d52af21c8fcbf6da3241';$url = "https://api./cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$appsecret;$res = $this->http_curl($url,'get','json');$access_token = $res['access_token'];//将重新获取到的access_token存到session中$_SESSION['access_token'] = $access_token;$_SESSION['erpire_time'] = time() + 7000;return $access_token;}}//生成临时二维码public function getTimeQrCode(){//1、获取ticket票据//全局票据access_token 网页授权access_token 微信js_SDK jsapi_ticket$access_token = $this->getWxAccessToken();$url = "https://api./cgi-bin/qrcode/create?access_token=".$access_token;$postArr = array('expire_seconds' => 604800,'action_name' => "QR_SCENE", 'action_info' => array('scene' =>array('scene_id' => 2000),),);$postJson = json_encode($postArr);$res = $this->http_curl($url,'post','json',$postJson);//var_dump($res);$ticket = $res['ticket'];//var_dump($ticket);//2、使用ticket获取二维码图片$url = "https://mp./cgi-bin/showqrcode?ticket=".urlencode($ticket);echo "<img src='".$url."' />";}//生成永久二维码public function getForeverQrCode(){//1、获取ticket票据//全局票据access_token 网页授权access_token 微信js_SDK jsapi_ticket$access_token = $this->getWxAccessToken();$url = "https://api./cgi-bin/qrcode/create?access_token=".$access_token;$postArr = array('action_name' => "QR_LIMIT_SCENE", 'action_info' => array('scene' =>array('scene_id' => 3000),),);$postJson = json_encode($postArr);$res = $this->http_curl($url,'post','json',$postJson);//var_dump($res);$ticket = $res['ticket'];//var_dump($ticket);//2、使用ticket获取二维码图片$url = "https://mp./cgi-bin/showqrcode?ticket=".urlencode($ticket);echo "<img src='".$url."' />";}