Solved PHP 7.0.6 and Kunena 4.0.10 and 5.0b4

Last night, our host (SiteGround) updated PHP from 7.0.4 to 7.0.6 - when they did, Kunena began giving errors on multiple sites on the same server. Rolling back to PHP 5.6 resolved them, but I wanted to note the issue so it could be addressed.

This was happening on multiple live sites running Kunena 4.0.10, as well as my test site running 5.0b4.

I'll post the logs / errors below.

[11-May-2016 09:03:10 CST6CDT] PHP Deprecated: Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php://input stream instead. in Unknown on line 0

I believe this is the error, it's the only one in php_errorlog

Here are more details about this issue:
github.com/Kunena/Kunena-Forum/issues/3934

Sample URL: template.knightrealms.com/community/forums.html

Error: 0 - Call to a member function get() on string

I get the same error on PHP 7.0.6 (Kunena 4.0.10). Worked fine on PHP 7.0.5.

I investigated the issue and it seems that the problem is in libraries/kunena/forum/category/helper.php
On line 805 there is this line: Normally this should instantiate each row with KunenaForumCategory constructor but in PHP 7.0.6, by some reason, it doesn't. My temporary solution is to do a manual instantiation right below like this: Works fine for me after that.

@Sake: it's not a good solution like matias said here : github.com/Kunena/Kunena-Forum/issues/39...suecomment-219026057

So stick on PHP 7.0.5 untill PHP 7.0.7 is released with the fix in it and PHP 5.6.21 has the same bug

As said, temporary solution that works fine for me until 7.0.7 release (as downgrading to 7.0.5 is too much of a hassle). Nobody said it should be incorporated into the core.