Turned-Off Errors Showing Up In Error Log

[eluser]WanWizard[/eluser]
@ does exactly what it says on the tin: it supresses the error message, it doesn't make the error go away.

Using @ is very expensive, and should be avoided where possible. Also, it's an indication of a not very clean programming style (to say it mildly), "possibly_undefined_variables" should not exist in your programs!