Legacy ImageMagick Discussions Archive

DJ Mike wrote:Post a link to an image that isn't working for you for us to test. I don't think this will help but you don't have a content header:

header('Content-Type: image/jpeg');

*edit* Ok, I exposed one of the servers to the Internet and put a sample of images up at: http://imgarchive.autc.com/test/

DJ Mike wrote:

*edit* Ok, I exposed one of the servers to the Internet and put a sample of images up at: http://imgarchive.autc.com/test/

The images you posted above the edit look OK but from http://imgarchive.autc.com/test/ I got http://imgarchive.autc.com/display.php? ... 275_dt.jpg which shows me an error message:

The image “http://imgarchive.autc.com/display.php? ... 275_dt.jpg” cannot be displayed because it contains errors.

I saw that a lot on I project last week. If you comment out the image header the output will be text and should give you the PHP error message. If not you have to enable error reporting.

      $imghandle = new Imagick();
      if (!$imghandle->readImage($pathimage)) {
        error_log("ImageRead: Failed to read image");
        exit;
      }
      if (!$imghandle->scaleImage($resize_x, $resize_y)) {
        error_log("ImageScale(".$image."): scaling image failed");
        exit;
      }
      $image_data = $imghandle->getImageBlob();
      header("Content-Length: ".strlen(image_data));
      print $image_data;

DJ Mike wrote:I copied one of your images that didn't work for you and tested using only scaleImage() with the sizes 100x75 and 210x158. Both worked. Looks like the error is before scaleImage().

http://eclecticdjs.com/mike/temp/11/07/ ... 890275.php

Code: Select all

<?php
$file = "10571930_74890275.png";
$image = new Imagick(); 
$image->readimage($file);
$image->scaleImage(210, 158);
header("Content-Type: image/png");
echo $image;
?>

<?php
$file = "10571930_74890275.jpg";
$image = new Imagick();
$image->readimage($file);
$image->scaleImage(210, 158);
echo $image;
?>

<?php
$file = "10571930_74890275.jpg";
$image = new Imagick();
$image->readimage($file);
$image->scaleImage(210, 158);
$image_data = $image->getImageBlob();
echo $image_data;
?>

$ hexdump -C 10571930_74890275_dt_current_code.jpg 
00000000  ff d8 ff e0 00 10 4a 46  49 46                    |ÿØÿà..JFIF|
0000000a

gshumway wrote: It can not be displayed because it is a corrupt image. All the server is sending is 10 byte (the start of a jpeg file). And the code for this is still:

Code: Select all

      $imghandle = new Imagick();
      if (!$imghandle->readImage($pathimage)) {
        error_log("ImageRead: Failed to read image");
        exit;
      }
      if (!$imghandle->scaleImage($resize_x, $resize_y)) {
        error_log("ImageScale(".$image."): scaling image failed");
        exit;
      }
      $image_data = $imghandle->getImageBlob();
      header("Content-Length: ".strlen(image_data));
      print $image_data;
[/quote]

Ok, found one error, the line "header("Content-Length: ".strlen(image_data));" is missing the $ in front of image_data. Fixing that I do get the correct size returned for image "10571930_74890275.jpg" when requested as _dt (210x175) and it works from command line (Perl-GET 'http://imgarchive.autc.com/display.php?img=10571930_74890275_dt.jpg' > 10571930_74890275_dt_fixed_strlen.jpg), although the size of the file is less (23,950 instead of 23,972). Checking more images now.