I'd guess that either $sitename or $ENV{'id'} is undefined. You can check using defined: 

if( ! defined $sitename )
{
    # do something (initialize? skip 'eq' tests?)
}

[download]

Update: Oh, and the 'error' you cite isn't an error, it's a warning. See "Use of uninitialized value%s" in perldiag.

In reply to Re: Use of uninitialized value in string eq by bobf
in thread Use of uninitialized value in string eq by maxcross7

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