Question

我正在尝试创建旋转图像功能，我尝试旋转的图像位于我的S3存储桶中。

所以我正在尝试创建一个从我的桶中抓取图像的功能，保存本地副本，旋转图像，将图像上传回S3。

我的剧本：

$s3 = new S3(myAccessKey, mySecretKey);
$target_path = CLOUDFRONTURLFORPHOTOS; //Cloudfront URL for photos

$filetodownload = $target_path."filename.jpg";
$savetofile = "foldername/filename.jpg";

$s3->getObject(MYBUCKET,CLOUDFRONTURLFORPHOTOS, array("filename.jpg" => $savetofile));

rotateImage($destpath, $destpath, $degree);

if ($s3->putObjectFile($destpath, MYBUCKET, $imagepath, S3::ACL_PUBLIC_READ)) {  
  echo 'Photo has been rotated and uploaded to the Photo Bucket.';
}
function rotateImage($sourceFile,$destImageName,$degreeOfRotation)
{
  //get the detail of the image
  $imageinfo=getimagesize($sourceFile);
  switch($imageinfo['mime'])
  {
   //create the image according to the content type
   case "image/jpg":
   case "image/jpeg":
   case "image/pjpeg": //for IE
        $src_img=imagecreatefromjpeg("$sourceFile");
                break; 
    case "image/gif":
        $src_img = imagecreatefromgif("$sourceFile");
                break;
    case "image/png":
    case "image/x-png": //for IE
        $src_img = imagecreatefrompng("$sourceFile");
                break;
  } 

  //rotate the image according to the spcified degree
  $src_img = imagerotate($src_img, $degreeOfRotation, 0);

  //output the image to a file
  imagejpeg ($src_img,$destImageName);
}

我收到此错误：

Warning: S3::getObject(bucketname, public-read): [0] Unable to open save file for writing: Array in S3.php on line 326 Warning: imagerotate() expects parameter 1 to be resource, null given in myfile.php on line 300 Warning: imagejpeg() expects parameter 1 to be resource, boolean given in myfile.php on line 303

请指教。我的代码中缺少什么？或者是否有更好的方法直接在S3存储桶中旋转图像而无需在本地下载文件？

如何使用PHP将文件从S3存储桶下载到本地服务器？

0 个答案: