public function httpRequest($url, $data=‘‘, $method=‘GET‘){
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($curl, CURLOPT_USERAGENT, $_SERVER[‘HTTP_USER_AGENT‘]);
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($curl, CURLOPT_AUTOREFERER, 1);
if($method==‘POST‘)
{
curl_setopt($curl, CURLOPT_POST, 1);
if ($data != ‘‘)
{
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
}
}

curl_setopt($curl, CURLOPT_TIMEOUT, 30);
curl_setopt($curl, CURLOPT_HEADER, 0);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
$result = curl_exec($curl);
curl_close($curl);
return $result;
}

//生成base64图片
public function base64_image($base64_image_content,$img_path,$img_name){
$ds = DIRECTORY_SEPARATOR;
//匹配出图片的格式
if (preg_match(‘/^(data:\s*image\/(\w+);base64,)/‘, $base64_image_content, $result)){
$type = $result[2];
if(!file_exists($img_path)){
//检查是否有该文件夹，如果没有就创建，并给予最高权限
mkdir($img_path, 0777);
}
$new_file = $img_path."/".$img_name.".{$type}";
if (file_put_contents($new_file, base64_decode(str_replace($result[1], ‘‘, $base64_image_content)))){
//return $new_file;
return "http://mpapi.ymt.kairende.com".$ds."upload".$ds."device".$ds."mp".$ds.$img_name.".{$type}";;
}else{
return false;
}
}else{
return false;
}
}



public function getAcess(){

header(‘content-type:text/html;charset=utf-8‘);
//配置APPID、APPSECRET
$APPID = "";
$APPSECRET = "";
//获取access_token
$access_token = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$APPID&secret=$APPSECRET";

//缓存access_token
session_start();
// $_SESSION[‘access_token‘] = "";
// $_SESSION[‘expires_in‘] = 0;
$expires_in = Yii::$app->session->get(‘expires_in‘);
$ACCESS_TOKEN = "";
//if(!isset($_SESSION[‘access_token‘]) || (isset($_SESSION[‘expires_in‘]) && time() > $_SESSION[‘expires_in‘]))
if(time() > $expires_in)
{
$json = $this->httpRequest( $access_token );
$json = json_decode($json,true);


Yii::$app->session->set(‘access_token‘, $json[‘access_token‘]);
Yii::$app->session->set(‘expires_in‘, time()+7200);

$ACCESS_TOKEN = $json["access_token"];
}else{
//$ACCESS_TOKEN = $_SESSION["access_token"];
$ACCESS_TOKEN = Yii::$app->session->get(‘access_token‘);
}

return $ACCESS_TOKEN;
}



//构建请求二维码参数
//path是扫描二维码跳转的小程序路径，可以带参数?id=xxx
//width是二维码宽度
public function actionRwm(){
$ACCESS_TOKEN = $this->getAcess();

 

//$ACCESS_TOKEN = "45_8Qwze6rRDB2uAxoitcpWMjc77Mfziyk8SCPsPCVdnnhEC2Er6MX-fqYa9KdRWnxMOnc7962JjtBgk3ea7l3QOw_ypTOIiNckT_aCBuOOUqDrb9OiydF-3NKay-5XJQJ0PeU8PObt9Sw-kWGzORNjAGAWZV";
$qcode ="https://api.weixin.qq.com/cgi-bin/wxaapp/createwxaqrcode?access_token=$ACCESS_TOKEN";
$param = json_encode(array("path"=>"pages/buy/index?device_id=203615615","width"=> 150));

//POST参数
$result = $this->httpRequest( $qcode, $param,"POST");
//生成二维码

$base64_image ="data:image/jpeg;base64,".base64_encode( $result );

//echo $base64_image;

//echo "<img src=".$base64_image.">"; //在postman中可打印中图片
$ds = DIRECTORY_SEPARATOR;

$baseDir = dirname(Yii::$app->basePath);
$baseUploadDirName = ‘mpapi‘.$ds.‘web‘;
$uploadDir = ‘upload‘.$ds.‘device‘.$ds.‘mp‘;

$completeUploadDir = $baseDir.$ds.$baseUploadDirName.$ds.$uploadDir;
$device_id = "203615615";


$res = $this->base64_image($base64_image, $completeUploadDir, $device_id); //
//http://mpapi.ymt.kairende.com/upload/device/mp/203615615.jpeg
return $res;

}