Question

Sorry if this is duplicate,I would think it would be but couldn’t find anything.

I have a flex application that I am posting data back to a PHP/MySQL server via Internet Explorer. I haven’t run into any problems yet, but knowing this ahead of time might save me a bunch of frustration and work. Is there a size limit to posting data via HTTP?

• This article says "no":
  http://www.netlobo.com/ie_form_submit.html
• This discussion says "yes":
  http://bytes.com/topic/php/answers/538226-what-maximum-limit-using-post-method

And it all goes back and forth what I’m able to find online. So please limit answers to personally tested/verified numbers.

I am wanting to post back an XML string that can be quite large (say up to 5mb).

If it makes any difference: browser will always be Internet Explorer (our product requires it), POST is coming from an HTTPService in Flex, web server is PHP, database is MySQL.

Answer 1

It depends on a server configuration. If you’re working with PHP under Linux or similar, you can control it using .htaccess configuration file, like so:

#set max post size
php_value post_max_size 20M

And, yes, I can personally attest to the fact that this works 🙂

If you’re using IIS, I don’t have any idea how you’d set this particular value.