I asked a similar quetion sometime back: How to capture STDOUT/STDERR of a function. One solution from there was: 
use strict;

my $out;
{
open local(*STDOUT), '>', \$out;
foo();
}

print "Std: $out\n";

sub foo{
    print "from foo";
}

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In reply to Re: Challenge: Capturing stdout from a function call. by johnnywang
in thread Challenge: Capturing stdout from a function call. by BUU

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