asked on

Corrupt thumbnails with imagejpeg()

I have created a script to create and upload a thumbnail of a selected image however, once in a while the thumbnail comes out corrupt as seen in this link: http://www.starfieldmedia.com/thumb_problem.htm

Is anyone familiar with this problem?

AmigoJack

no, dont ever encountered such a problem. you might want to give us your code and your system on which you perform the code (php version, gd-library version...)

feign3

ASKER

Hi AmigoJack,

Here's the data you requested:

PHP Version 4.4.2
GD Support enabled
GD Version bundled (2.0.28 compatible)
FreeType Support enabled
FreeType Linkage with freetype
GIF Read Support enabled
GIF Create Support enabled
JPG Support enabled
PNG Support enabled
WBMP Support enabled
XBM Support enabled

System: FreeBSD 5.4-STABLE

Here's the code (variable assignments not included):

function thumbnail($image_path,$thumb_path,$image_name,$thumb_width)
{
$src_img = imagecreatefromjpeg("$image_path/$image_name");
      if (!isset($HTTP_GET_VARS['maxwidth'])) $max_width=150; else $max_width=($HTTP_GET_VARS['maxwidth']);
      if (!isset($HTTP_GET_VARS['maxheight'])) $max_height=600; else $max_height=($HTTP_GET_VARS['maxheight']);

      $size=GetImageSize("../PICS/".$image_name);
      $width =$size[0];
      $height=$size[1];

      $x_ratio = $max_width / $width;
      $y_ratio = $max_height / $height;

      if ( ($width <= $max_width) && ($height <= $max_height)) {
      $tn_width=$width;
      $tn_height=$height;
      }
      else if (($x_ratio * $height) < $max_height) {
      $tn_height = ceil($x_ratio * $height);
      $tn_width =$max_width;
      }
      else {
      $tn_width = ceil($y_ratio * $width);
      $tn_height=$max_height;
      }

      $new_w = $tn_width;
//$diff=$origw/$new_w;
//$new_h=$new_w;
      $new_h = $tn_height;
$dst_img = imagecreate($new_w,$new_h);
imagecopyresized($dst_img,$src_img,0,0,0,0,$new_w,$new_h,imagesx($src_img),imagesy($src_img));
imagejpeg($dst_img, "$thumb_path/TN_$image_name",100);
return true;
}
thumbnail("../PICS","../PICS",$imgf,150);

This doesn't happen to every thumbnail... maybe one in every 5.

ASKER CERTIFIED SOLUTION

AmigoJack

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