maximum number of user groups ? - Joomla! Forum - community, help and support

question: there limited number of user groups can installed, above problems arise? *

issues appear arise in making saves in global configuration, when number of user groups exceeds 700 or so.

seemingly, solving issues can done increasing variable called max_input_vars in file php.ini

is true? other issues remain?

why asking this:
i avoid bumping these kind of issues. need decide whether prototype setting pro should demo purposes or can further developed towards fully-featured service.

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* similar question posted on forum on may 2014: http://forum.joomla.org/viewtopic.php?t=846299.

related discussions on developer forum:
https://developer.joomla.org/joomlacode-archive/issue-31958.html - closed april 2014
https://developer.joomla.org/joomlacode-archive/issue-34083.html - closed august 2014

what experiencing normal. thing is, every time add user group, permissions tab in global configuration have field, , field posted action page, means field counted toward max_input_vars limit. default limit of max_input_vars 1000, once hit limit run issues.

php not specify maximum value can set max_input_vars to, there must limit (if knows please post here appropriate answer).

personally, not recommend approach because of following:

- higher max_input_vars use is, harder website can hit dos attack using hash collisions (max_input_vars used mitigate these types of dos attacks).

- having such abnormally high number "may" cause issues (performance issues, stability issues) on joomla website. in fairness, i'm speculating here, wouldn't take approach speculation alone.

- might logic flawed - need 700 user groups? , why? maybe need things somehow differently.