Alternative PHP Completions
These completions are more up-to date, and include
more arguments, than the default completions. Many
extension modules are block-commented out by default:
uncomment any of these libraries if you wish to use
them, and block-comment any that you do not require.
(Ctrl-Shift-/ is the default key-binding to toggle comments.)
For some of the completions there are two versions: (full) denotes completions with the full argument list.
You should move the default PHP.sublime-completions file outside your Packages area. This is likely to be reinstalled on a future ST update or build - so you will need to move this file each time!