Deleted 9 old and low rated notes

Following were the 9 notes with a rating less than -5 and
are older than 1 year.

These notes represented 0.1% of the 17468 total user notes,
and have now been removed.

Rating | Note
-------+---------------------------------------------------------
   -6  | https://php.net/manual/en/function.move-uploaded-file.php#99456
   -6  | https://php.net/manual/en/book.pdo.php#114974
   -6  | https://php.net/manual/en/function.urlencode.php#125522
   -6  | https://php.net/manual/en/ref.bc.php#94610
   -6  | https://php.net/manual/en/function.max.php#126214
   -6  | https://php.net/manual/en/json.installation.php#113869
   -6  | https://php.net/manual/en/function.escapeshellcmd.php#108322
   -6  | https://php.net/manual/en/splfileobject.construct.php#115587
   -6  | https://php.net/manual/en/ref.strings.php#58019