Need Help Add TotalHours in Stored Procedures

I'm using MMT Season 2 Database and would like to add the TotalHours (TH) table and stored procedure but I don't know which part should I add the query from 4Funer.

Code:

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, TH = TH+(DATEDIFF(mi,ConnectTM,getdate()))

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Here is my WZ_DISCONNECT_MEMB from MMT Season 2 released DBase

Code:

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CREATE PROCEDURE [dbo].[WZ_DISCONNECT_MEMB]

@uid varchar(20)
AS
Begin

BEGIN TRANSACTION

SET NOCOUNT ON

IF EXISTS ( SELECT memb___id FROM MEMB_STAT WITH (READUNCOMMITTED)
WHERE memb___id = @uid )
Begin
UPDATE MEMB_STAT
SET DisConnectTM = (getdate()), connectstat = 0 WHERE memb___id = @uid
End
ELSE
Begin
INSERT INTO MEMB_STAT ( memb___id,DisConnectTM,connectstat) valueS (
@uid,
(getdate()),
0
)
End


IF(@@Error <> 0 )
ROLLBACK TRANSACTION
ELSE
COMMIT TRANSACTION

SET NOCOUNT OFF
End

GO

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Why dont make with a simple PHP query and cron?