I was getting this error when Creating a Feature in Features UI.

An AJAX HTTP error occurred. HTTP Result Code: 200 Debugging information follows. Path: /system/ajax StatusText: OK ResponseText: Warning: Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0...whole long string of json response stuff.

Solution:
I reverted my stack back to PHP 5.3 and Features works fine when creating a feature. But, I still get the error on 5.4.

Note: I did just realize I'm still using Features 7.x-1.0, whereas 7.x-2.3 is out. So, maybe 7.x-2.3 addresses this issue. Is it safe to make that major upgrade?

Comments

hefox’s picture

Yes, switching versions is fairly safe, but take a database dump prior to/backup site.

Also, look at the error itself, it gives you advice for how to address it: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini

jdleonard’s picture

Status: Active » Closed (works as designed)

I can confirm that increasing max_input_vars in php.ini solves this problem.