TP5公衆號帶參數二維碼生成
php代碼示例（已測試）：
//二維碼type
public function qrcode($id,$type='1'){
if($type == 1){
$para='uid,'.$id;
}else{
$para='container,'.$id;
}
$arr=['action_name'=>'QR_LIMIT_STR_SCENE','action_info'=>['scene'=>['scene_str'=>$para]]];
$data=json_encode($arr);
$url='https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token='.getAccessToken();
$result=CURLSend($url,'post',$data);
$results=json_decode($result,true);
$qecodeUrl='https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket='.UrlEncode($results['ticket']);
$res = $this->uploadImg($qecodeUrl);
return $res;
}
public function uploadImg($img){
$path = DOC_ROOT.'upload/qrcode';
if(!file_exists($path)) {
mkdir($path, 0777, true);
}
ob_clean();
ob_start();
$ext="/".time().".png";
readfile($img); //讀取圖片
$img=ob_get_contents(); //得到緩衝區中保存的圖片
ob_end_clean(); //清空緩衝區
$fp = fopen($path.$ext,'w'); //寫入圖片
if(fwrite($fp,$img)){
fclose($fp);
return IMGS.'upload/qrcode'.$ext;
}
return false;
}
//獲取access_token,微信調用接口憑據(使用接口需要用到)
//access_token獲取頻次2000/天,2小時內有效
function getAccessToken(){
$config=db('public_wx_config')->field('appid,appsecret,expires_in,access_token')->where('id',1)->find();
$appid=$config['appid'];
$secret=$config['appsecret'];
if($config['expires_in']< time()){
$url="https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=".$appid."&secret=".$secret;
$tmp=CURLSend($url,'get');
$obj=json_decode($tmp);
$dty=(time()+$obj->expires_in);
$data['access_token']=$obj->access_token;
$data['expires_in']=$dty;
db('public_wx_config')->where('id',1)->update($data);
return $obj->access_token;
}else {
return $config['access_token'];
}
}
/*
*模擬瀏覽器發送
*/
function CURLSend($url,$method = 'get', $data = ''){
$ch = curl_init();//初始化
$headers = array('Accept-Charset: utf-8');
//設置URL和相應的選項
curl_setopt($ch, CURLOPT_URL, $url);//指定請求的URL
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, strtoupper($method));//提交方式
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);//不驗證SSL
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);//不驗證SSL
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);//設置HTTP頭字段的數組
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible;MSIE5.01;Windows NT 5.0)');//頭的字符串
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch, CURLOPT_AUTOREFERER, 1);//自動設置header中的Referer:信息
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);//提交數值
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);//是否輸出到屏幕上,true不直接輸出
$temp = curl_exec($ch);//執行並獲取結果
curl_close($ch);
return $temp;//return 返回值
}