Ok bare with me, ok.
I have a program that writes values created to two different files, "pass" and "userlog" as it happens. The program works perfectly apart from the this message that appears in "userlog", with the data appended to it. I'm aware that this error message appeared because I have warnings turned on. But what I want to no is how to fix the problem:

Use of uninitialized value in join or string at reg.cgi line 166 (#1)

(W uninitialized) An undefined value was used as if it were already de
+fined.  

It was interpreted as a "" or a 0, but maybe it was a mistake.

To suppress this warning assign a defined value to your variables.

To help you figure out what was undefined, perl tells you what operati
+on you used the undefined value in.  

Note, however, that perl optimizes your program and the operation disp
+layed in the warning may not necessarily appear literally in your pro
+gram.  

For example, "that $foo" is usually optimized into "that " . $foo, and
+ the warning will refer to the concatenation (.) operator, even thoug
+h there is no . in your  program.
[download]

Heres the code for the error:

    open USRNF,">>$file" or die "Couldn't find user file $file, Perl s
+ays $!\n";
    print USRNF join "#", @info;      #Line 166 Error = "#"
    print USRNF "\n";
    close USRNF;
  


   open PASS,">>$pass" or die "Coundn't find user file $pass, Perl say
+s $!\n";
   print PASS $user_name;
   print PASS "\\";
   print PASS &encryption($password);
   print PASS "\n";
   close PASS;
[download]

Thanks, Eoin..

---

In reply to Perl says $!what??? by eoin

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