php server settings for restrict post queries

Question

I have php script on hosting, which receive big data with ajax/post.

Just now, after some works on hosting, I see that script is broken.

I checked with curl:

file temp1:

user_avatar=&user_baner=&user_sig=.... 

237 chars total, and

curl -H "X-Requested-With: XMLHttpRequest" -X POST --data @temp1 'http://host/mypage.php'

works perfect.

But with file temp2:

name=%D0%9C%D0%B5%D0%B1%%B5%D0%BB%D1%8C%D0%A4%%B0%D0%B1%D1%80%D0%B8%D0%BA%D1%8A&user_payed=0000-00-00&...positions%5B5231%5D=on

total chars: 65563

curl -H "X-Requested-With: XMLHttpRequest" -X POST --data @temp2 'http://host/mypage.php'

curl return nothing.

Looks like a problem with apache/php/php.ini or something like that.

I check .htaccess

php_value post_max_size 20M

Which other parameters I should check?

Is it possible that %BO encode kill php/apache? Or total number of parameters (about 2800) ?

Answer 1

Sounds like you may be hitting a limit imposed by the suhosin patch for PHP - specifically the suhosin.post.max_value_length parameter.

Is there anything in the web server's error_log which could help?

Answer 2

It was php_value max_input_vars