d19e428 removes thousands of E_NOTICEs when running tests with php_errors = E_ALL. It made me discover the otherwise invisible bug in 890c119. Now, only engine/tests/api/entity_getter_functions.php produces E_NOTICEs, but I didn't investigate further on how to fix them.

Most of these were included in your previous push which I think I merged in after you merged the Elgg master into your repo. It will be easier once we switch Elgg over it git rather than using it as a mirror.

Indeed. Only those I mentioned are to be considered.

I think all of those are integrated into our svn trunk (though with slightly different implementations). @ is equivalent to 2 ini_set calls as I understand it so I used isset() instead.