imagecreatefromjpeg loops 4ever

Gasolene

the following script loops 4 ever on the imagecreatefromjpeg line. nothing is outputed.

the imagecreatefromjpeg function never returns.

However if I compress the uploaded jpg file to smaller then 300k it works fine.

we recently upgraded our server. this script worked fine on php 4.0.x gd 1.6

why does imagecreatefromjpeg return when jpgs is larger than ~300k

now using 4.3.8 gd 2.0.23

echo $_FILES['upfile']['tmp_name'];
echo $_FILES['upfile']['name'];

$img_src = imagecreatefromjpeg( $_FILES['upfile']['tmp_name'] );

die('done');

timbr8ks

You may be running out of memory as the script is running. Add this line at the top:

# set the memory limit
ini_set('memory_limit','500M');

This will increase the memory this script uses.

You also might try uploading the photo and then creating the image, like this:


$path = $_SERVER['DOCUMENT_ROOT'] . '/photos/';
if ( is_uploaded_file( $_FILES['upfile']['tmp_name'] ) ) {
     $filename = $_FILES['upfile']['name'];
     if (move_uploaded_file($_FILES['infile']['tmp_name'], $path.$filename)) {
          @chmod($filename,0666);
          error_reporting (E_ALL);
          $abc = imagecreatefromjpeg($path.$filename);     }
}

I haven't tested this, but it's the general idea. Upload the file, then create the image. If you've saved the initial width and height, you then change the dimensions like this:

error_reporting (E_ALL);
$abc = imagecreatefromjpeg($path.$filename); 
$def = imagecreatetruecolor($newwidth, $newheight); 
imagecopyresized($def, $abc, 0, 0, 0, 0, $newwidth, $newheight, $width, $height); 
imagejpeg($def, $path.$filename, 95); 
imagedestroy($abc); 
imagedestroy($def);

Gasolene

i tried the memory line with no luck

I have discovered that it is not the filesize that is causing the problems, it is the image dimensions.

an image of 2080 X 1500 regardless of weather it is 1.3M or 39k, will cause the imagecreatefromjpeg functin to not exit.

timbr8ks

Ah. I experienced this issue as well when people were trying to upload what basically amounted to wall-sized, high-res posters. However, my problem seemed to occur when the photos were over 3000 x 3000. The size you've indicated were working fine with the increased memory.

Try uploading the image first to see if that resolves it for you.

tsinka

Hi,

there are some settings in php.ini like upload_max_filesize and post_max_size. Check the values of these variables.

The problem is that PHP dies silently (at least certain versions) without any warning if the size of the posted data (the complete posted data ... not only the file data) exceeds post_max_size.

Thomas

Gasolene

thnx for replies

I don't think this is a post related problem, I can upload the image to server image using copy function.

problem seems to start when I use the imagecreatefromjpeg

In fact I ftp'd it to the server and tried to access it directly on the server so there was no uploading. ie:

 
// this is the only line in entire php file
imagecreatefromjpeg( '/home/.../upfolder/test.jpg' )

and it still never exited the function