Re: checking for valid date

in reply to checking for valid date

There are a pile of Date manipulation modules available for Perl. The big hammer is Date::Manip. Possibly the way to validate your date string is first to chop it up assuming that the format is correct:

if ($yyyymmdd !~ /(\d{4})(\d\d)(\d\d)/) {
    print "Bad data string provided: $yyyymmdd\n";
    return 0;
}

my ($year, $month, $day) = ($1, $2, $3);
...
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You can then check that the year, month and day are within the expected ranges and finally validate the full date by using Date::Manip.

DWIM is Perl's answer to Gödel

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