Allocated plenty of memory to load image into, says its exhausted

Question

Getting this error when trying to load image into memory...

Allowed memory size of 10485760 bytes exhausted (tried to allocate 18048 bytes)

//attempt to open image
ini_set('memory_limit', '10M');
if($im = imagecreatefromjpeg($_GET['imgname'])) {
    //See if there is a width or height constraint
    if (isset($_GET['restraint'])) {
        $constr = $_GET['restraint'];
        if ($constr == "width") {
            if (imagesx($im) > imagesy($im)) {
                $im = imagerotate($im, 90, 0);
            }
        } elseif ($constr == "height") {
            if (imagesy($im) > imagesx($im)) {
                $im = imagerotate($im, 90, 0);
            }
        }
    }
    header('Content-Type: image/jpeg');
    imagejpeg($im);
    imagedestroy($im);
}

Any ideas?

Edit:

memory_get_usage = 125768 memory_get_peak_usage = 127016

possible duplicate of [imagejpeg memory exhaustion](http://stackoverflow.com/questions/2668533/imagejpeg-memory-exhaustion) — Pitchinnate, Feb 27 '14 at 19:01
How much memory is actually available on the server? Just because you tell PHP it can use that much doesn't mean that much is available. — Pitchinnate, Feb 27 '14 at 19:06
How do I find that out @Pitchinnate ? The laptop itself has 4GB — Martyn Ball, Feb 27 '14 at 19:08
jpeg is a compressed type of image, maybe when the image is loaded gets uncompressed, I had a similar situation but not in php, for example a 200kb image can grow up until 9MB in memory — Allende, Feb 27 '14 at 19:09
Have you tried with a smaller image ? around 100kb ? If it works then your 1MB image it's the problem(based on resolution and bpp maybe it's too big) — Allende, Feb 27 '14 at 19:16

score 1 · Accepted Answer · edited May 23 '17 at 12:28

JPEG is a compressed type of image, maybe when the image is loaded gets uncompressed, I had a similar situation but not in php (.net compact framework):

Even though the compressed image size is 200kb, when you load it as a bitmap it will be decompressed and stored in memory in native Bitmap format. Given a height and width of 1500px each, and assuming a bitmap format of 32bpp (the default when not specified), you're looking at 9MB of allocated memory

1500 * 1500 * 4 = 9MB.

Take a look to this:

http://www.dotsamazing.com/en/labs/phpmemorylimit

Also you can try to set your memory limit directly on in php.ini and restart apache.

http://www.php.net/manual/en/ini.core.php#ini.memory-limit

Try with a big one (512M)

Here's the question I had but again, it's not php related, but image-size/memory related OutOfMemoryException loading big image to Bitmap object with the Compact Framework

The memory calculator seemed to help as I allocated 140M at runtime and everything seems to work fine thanks. — Martyn Ball, Feb 28 '14 at 00:23

Allocated plenty of memory to load image into, says its exhausted

1 Answers1