title: What is the size limit of a post request?
body: <p>Sorry if this is duplicate,I would think it would be but couldn't find anything.</p>
  
  <p>I have a flex application that I am posting data back to a php/mysql server via IE. 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? </p>
  
  <p>This article says no:
  <a href="http://www.netlobo.com/ie_form_submit.html" rel="noreferrer">http://www.netlobo.com/ie_form_submit.html</a></p>
  
  <p>This discussion says yes:
  <a href="http://bytes.com/topic/php/answers/538226-what-maximum-limit-using-post-method" rel="noreferrer">http://bytes.com/topic/php/answers/538226-what-maximum-limit-using-post-method</a></p>
  
  <p>And it all goes back and forth what I'm able to find online. So <strong>please</strong> limit answers to personally tested/verified numbers.</p>
  
  <p>I am wanting to post back an XML string that can be quite large (say up to 5mb).</p>
  
  <p>If it makes any difference: browser will always be IE (our product requires it), post is coming from and httpService in flex, web server is php, DB is mySql. </p>