Deleted 5 old and low rated notes

Following were the 5 notes with a rating less than -5 and
are older than 1 year.

These notes represented 0.0% of the 17875 total user notes,
and have now been removed.

Rating | Note
-------+---------------------------------------------------------
   -6  | https://php.net/manual/en/function.substr-count.php#113288
   -6  | https://php.net/manual/en/function.array-slice.php#119508
   -6  | https://php.net/manual/en/ref.filesystem.php#35196
   -6  | https://php.net/manual/en/function.set-time-limit.php#62510
   -6  | https://php.net/manual/en/errorfunc.constants.php#120861