Given what I already said (it is unwise) and good modules suggested as symbol table inspector ie Data::Dumper::Names which uses PadWalker you probably mean something like the following (working for scalar, must be modified for arrays and hashes)?

perl -e " my $x = 15; print map {$_.' = '.eval eval{$_} } '$x' "

$x = 15
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Again: this leads you on a wrong path, might be worth to know but not to be used

L*