From: zsheran at yahoo dot com
Operating system: Redhat 9
PHP version: 4.3.7
PHP Bug Type: GD related
Bug description: Memory leak when calling imageCreateFromJPEG and
imagecreatetruecolor in loop
Description:
------------
I call the function below from a loop about 17,000 times to resize JPGs
which are about 20k each. Note that $source_file is a URL. I run the
script from CLI. By the time the script finishes after ~270 minutes, the
PHP process uses 340MB of RAM; it grows slowly and steadily to that size.
I unset the variables at the end of the function but it makes no
difference. Now 340MB is about the size of those 17,000 pics. For some
reason, the fetched images are not freed from memory, probaly only upon
finishing the script. But since it runs in a loop, it adds up at becomes
eventually a problem. It works but it would be great if the memory leak
could be fixed; I expect the number of images to grow to six digit numbers
in the future.
Thanks for your time.
Reproduce code:
---------------
function resize_picture ($source_file, $target_file) {
$source_picture = imageCreateFromJPEG($source_file);
if ($source_picture) {
$picsize = @getimagesize($source_file); // get source image size
$source_x = $picsize[0]; // source image width
$source_y = $picsize[1]; // source image height
#create image $target_picture
$target_picture = imagecreatetruecolor(320, 240);
#Resize $source_picture and copy it into $target_picture.
imagecopyresampled($target_picture,$source_picture,0,0,0,0,320,240,$source_x,$source_y);
#Create jpeg from $target_picture. Save as $target_file
imagejpeg ($target_picture,"/path/$target_file",80);
unset($source_picture);
unset($target_picture);
}
}
--
Edit bug report at http://bugs.php.net/?id=29558&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=29558&r=trysnapshot4
Try a CVS snapshot (php5): http://bugs.php.net/fix.php?id=29558&r=trysnapshot5
Fixed in CVS: http://bugs.php.net/fix.php?id=29558&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=29558&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=29558&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=29558&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=29558&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=29558&r=support
Expected behavior: http://bugs.php.net/fix.php?id=29558&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=29558&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=29558&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=29558&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=29558&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=29558&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=29558&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=29558&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=29558&r=float
