通过公众平台接口生成带参数的二维码,分为两种:临时二维码、永久二维码
临时二维码:生存时间1800秒;无数量限制;
永久二维码:生存时间为永久;最多支持1000个;
官方给出的提示,分别适用于账号绑定、用户来源统计。
用户扫描带参数的二维码,系统将推送两种事件:
如果用户未关注公众号,则用户可以关注公众号,关注后微信会将事件推送给开发者
如果用户已关注公众号,用户扫描后会自动进入会话,微信也会将事件推送给开发者
获取带参数的二维码过程包括两步:
1、创建二维码ticket
2、凭借已获取的ticket换取二维码
php实现代码:
<?php header(\'content-type:text/html; charset=utf8\'); define(\'TOKEN\', \'yooheo\'); // TOKEN define(\'APP_ID\', \'wxebb0f6ff22cf68f3\'); // 开发者AppID,服务号可获取 define(\'APP_SECRET\', \'795fafe89e338f9f8595f396330f6218\'); // 开发者AppSecret,服务号可获取 set_time_limit(30); //为防止access_token获取失败导致死循环 $wechatObj = new WechatClass(); echo \'二维码地址:\'. $wechatObj->QrcodeCreate(111); class WechatClass{ private $token; private $appID; private $appSecret; private $accessToken; public function __CONSTRUCT(){ $this->token = TOKEN; $this->appID = APP_ID; $this->appSecret = APP_SECRET; $this->accessToken = \'./access_token\'; if(!file_exists($this->accessToken)){ $this->AccessTokenGet(); } } /* 创建二维码 @param - $qrcodeID传递的参数,$qrcodeType二维码类型 默认为临时二维码 @return - 返回二维码图片地址*/ public function QrcodeCreate($qrcodeID, $qrcodeType = 0){ if($qrcodeType == 0){ $qrcodeType = \'QR_SCENE\'; }else{ $qrcodeType = \'QR_LIMIT_SCENE\'; } $tempJson = \'{"expire_seconds": 1800, "action_name": "\'.$qrcodeType.\'", "action_info": {"scene": {"scene_id": \'.$qrcodeID.\'}}}\'; $access_token = file_get_contents($this->accessToken); $url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token=".$access_token; $tempArr = json_decode($this->JsonPost($url, $tempJson), true); if(@array_key_exists(\'ticket\', $tempArr)){ return \'https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=\'.$tempArr[\'ticket\']; }else{ $this->ErrorLogger(\'qrcode create falied.\'); $this->AccessTokenGet(); $this->QrcodeCreate(); } } /* 从微信服务器获取access_token并写入配置文件 */ private function AccessTokenGet(){ $url = \'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=\'.$this->appID.\'&secret=\'.$this->appSecret; $tempArr = json_decode(file_get_contents($url), true); if(@array_key_exists(\'access_token\', $tempArr)){ $tempWriter = fopen($this->accessToken, \'w\'); fwrite($tempWriter, $tempArr[\'access_token\']); }else{ $this->ErrorLogger(\'access_token get falied.\'); exit(); } } /* 用户分组查询 */ public function GroupsQuery(){ $access_token = file_get_contents($this->accessToken); $url = \'https://api.weixin.qq.com/cgi-bin/groups/get?access_token=\'.$access_token; $tempArr = json_decode(file_get_contents($url), true); if(@array_key_exists(\'groups\', $tempArr)){ return $tempArr[\'groups\']; //返回数组格式的分组信息 }else{ $this->ErrorLogger(\'groups query falied.\'); $this->AccessTokenGet(); $this->GroupsQuery(); } } // 工具函数 // /* 使用curl来post一个json数据 */ // CURLOPT_SSL_VERIFYPEER,CURLOPT_SSL_VERIFYHOST - 在做https中要用到 // CURLOPT_RETURNTRANSFER - 不以文件流返回,带1 private function JsonPost($url, $jsonData){ $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE); curl_setopt($curl, CURLOPT_POST, 1); curl_setopt($curl, CURLOPT_POSTFIELDS, $jsonData); curl_setopt($curl, CURLOPT_TIMEOUT, 30); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); $result = curl_exec($curl); if (curl_errno($curl)) { $this->ErrorLogger(\'curl falied. Error Info: \'.curl_error($curl)); } curl_close($curl); return $result; } /* 错误日志记录 */ private function ErrorLogger($errMsg){ $logger = fopen(\'./ErrorLog.txt\', \'a+\'); fwrite($logger, date(\'Y-m-d H:i:s\')." Error Info : ".$errMsg."\r\n"); } } ?>