Declare them. If you don't know what the implications are of an error message you can always use diagnostics:

$ perl -Mstrict -Mdiagnostics -e '$x=1;'
Global symbol "$x" requires explicit package name at -e line 1.
Execution of -e aborted due to compilation errors (#1)
    (F) You've said "use strict" or "use strict vars", which indicates
+ 
    that all variables must either be lexically scoped (using "my" or 
+"state"), 
    declared beforehand using "our", or explicitly qualified to say 
    which package the global variable is in (using "::").
    
Uncaught exception from user code:
        Global symbol "$x" requires explicit package name at -e line 1
+.
        Execution of -e aborted due to compilation errors.

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In reply to Re: Recover a variable from a loop by hippo
in thread Recover a variable from a loop by Chaoui05

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