Fix various PHP code bugs found using static analysis (#1489086)

Aleksander Machniak

2013-05-06 187cf5e1cdee87fb1d26599f93202222bb7b8a4b

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-- Updates from version 0.7-beta 
 
ALTER TABLE [dbo].[session] ALTER COLUMN [sess_id] [varchar] (128) COLLATE Latin1_General_CI_AI NOT NULL 
GO