Answer: variable through another variable


good chemistry is complicated, and a little bit messy -LW
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by Juerd (Abbot)

on Jan 26, 2002 at 17:01 UTC ( #141776=categorized answer: print w/replies, xml )

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That will work, but not under strict 'refs'. Symbolic references are considered bad practice (but you can't always avoid them).

$testing = "Hello, World!\n";
$var = "testing";
$data = $$var;
print $data; # prints Hello, World!
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Using a hash is better, and hashes are useable under strict 'refs':

$hash{"testing"} = "Hello, World!\n";
$var = "testing";
$data = $hash{$var};
print $data;
[download]

(You can remove quotes from hash keys that have no \W characters: $hash{testing}.)

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