FAQ 5.12 How can I open a filehandle to a string?

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5.12: How can I open a filehandle to a string?

    (contributed by Peter J. Holzer, hjp-usenet2@hjp.at)

    Since Perl 5.8.0 a file handle referring to a string can be created by
    calling open with a reference to that string instead of the filename.
    This file handle can then be used to read from or write to the string:

            open(my $fh, '>', $string) or die "Could not open string for
            print $fh "foo\n";
            print $fh "bar\n";      # $string now contains "foo\nbar\n"

            open(my $fh, '<', $string) or die "Could not open string for
            my $x = <$fh>;  # $x now contains "foo\n"

    With older versions of Perl, the "IO::String" module provides similar


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