8MB Allocated Memory Used????

[onlyican]

Hey people

I dont understand this

I created a class to upload / manipulate images.

I have just been informed of the following error
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 3072 bytes) in /home/httpd/vhosts/****.co.uk/httpdocs/administration/includes/class.uploadimg.php on line 360

Now I can not see my class exceeding the 8MB limit
Line 360 is
$image = imagecreatefromjpeg($_FILES[$this->form_file_name]["tmp_name"]);

The class can be found at

http://onlyican.com/class.uploadimg.phps

There is an Image Upload Max Size set to 1MB

I know I can set the Memory Limit higher, but I want to know WHY I am getting this message.

[HuggieBear]

[quote author=onlyican link=topic=124534.msg516057#msg516057 date=1170079144]
I know I can set the Memory Limit higher, but I want to know WHY I am getting this message.
[/quote]

The GD library uses a lot of memory.

I included a link in a [url=http://www.phpfreaks.com/forums/index.php/topic,121661.msg500680.html#msg500680]previous post[/url] that details this.

Regards
Huggie

[onlyican]

something confusing me, the person has just emailed me the picture he is using.

Its 3072px Wide BY 2048px High
300DPI
but only 768kb

so what I think is happening is that when I resize the image, it still uses the 300 dpi size, which is making the file size larger, as it should be.

Is there a way in PHP, to check the DPI, and change it to 72dpi

[HuggieBear]

[quote author=onlyican link=topic=124534.msg516096#msg516096 date=1170081728]
Its 3072px Wide BY 2048px High
300DPI
but only 768kb
[/quote]

The quality of that must be extremely poor!

As for setting the quality to 72dpi, I'd suggest looking through all the [url=http://uk.php.net/manual/en/ref.image.php]image functions[/url].

Huggie

[onlyican]

The quality is good, I made it a FireWorks PNG, and the size is 11.3 MB
But for some reason, JPG is making it too small.