将指定文件夹下所有图片转换成base64并返回数组

    public function convertImgToBase64($imgFolderPath, $appID, $customerID)
    {
        $imageFolder = $imgFolderPath.$appID.‘/‘.$customerID.‘/‘;

        $base64EncodedArray = array();

        if(is_dir($imageFolder))
        {
        	Yii::trace($imageFolder);
            $handler = opendir($imageFolder);
            while (($filename = readdir($handler)) !== false) {
                if ($filename != "." && $filename != "..") {
                        $imageFilePath = $imageFolder.$filename;
                        $imageInfo = getimagesize($imageFilePath);
                        $base64ImageContent = "data:{$imageInfo[‘mime‘]};base64," . chunk_split(base64_encode(file_get_contents($imageFilePath)));
                        array_push($base64EncodedArray, $base64ImageContent);
                   }
               }
            closedir($handler);
        }

        return $base64EncodedArray;
    }