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I wanna save the canvas as png. The size of the canvas is about 2000x2000px, canvas.toDataURL() returns 5.600.000 chars (700 KB). When I try to send it to the server, I get an 413 request entity too large error. There isn't any size limit for ajax post. In the server, the LimitRequestBody is 2 GB, more than I need, post_max_size is 132M.
Any idea, why I get this error?
Or are there a better way to save the image? I use fabric.js. I tried to draw the image with php, but I had many problems. Do you know any frameworks that can draw the same as the fabric.js?

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klenium
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    Assuming you've tested your upload code with a smaller file and that test succeeded, be sure you’ve configured your php server with appropriate upload limits: post_max_size, upload_max_filesize, max_execution_time. – markE Jan 25 '14 at 20:36
  • post_max_size is more than I need. upload_max_filesize isn't essential, I'm not uploading any file (but it's 2000M lol). max_execution_time is 60. And yes, I tested it with a smaller image. When the canvas was about 750x750, it worked well, I could save the image. – klenium Jan 25 '14 at 21:16
  • Ok...is your upload directory set to other than the tmp directory and does that upload directory have sufficient disk space. You might try to reduce the size of post_max_size to something reasonable(maybe 16M). Are you running other components (like nginx) that need to be configured also? Realistically, it's very difficult to diagnose network config problems on a forum like stackoverflow... – markE Jan 25 '14 at 21:27
  • 5,600,000 chars is not 700KB, it is ~ 5.5MB, how did you calculate it? – arty Jan 27 '14 at 08:28

2 Answers2

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You don't have acess to your server php.ini, right?

Try use ini_set function:

For example:

ini_set('post_max_size', '10M');
ini_set('upload_max_filesize', '10M');
ini_set('max_execution_time', 0);

Or try put a .htaccess file in the same directory as your .php:

php_value upload_max_filesize 10M
php_value post_max_size 10M
php_value max_execution_time 0

Please note that 0 (zero) is infinite in max_execution_time.

I hope this help.

ptCoder
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you can go to the php.ini file and resize the max_post_lenght

Masood Abbas
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