How to override Joomla input.php(JFilterInput class)

Question

I want to override JFilterInput class on Joomla. The file is on below path:

[Joomla_Path]/libraries/joomla/filter/input.php

Because this file developed just for non-Unicode characters.So it shows

Notice: Array to string conversion

on line 233 in many components like com_finder that uses this class for Unicode characters. That line is:

$result = (string) preg_replace('/[^A-Z0-9_\.-]/i', '', $source);

for this reason I wanted to override this line and same others. firstly I developed a Joomla system plugin to override this file with onAfterRoute() method but by following this post in stackexchange I changed onAfterRoute() method to onAfterInitialise() method. But again it shows below fatal error:

Fatal error: Cannot redeclare class JFilterInput

Now I'm looking forward to get helps from everybody which solve this problem. in addition, I use last version of Joomla

Answer 1

It is strange that it return "Notice: Array to string conversion". It usually means that you try to get array variable using string functions. Check what data do you push directly in $_REQUEST.

Back to question. You can always use RAW type of filter if filtering is to strict.

If you still need to override this class please check this plugin sample: https://gist.github.com/dongilbert/3237387.