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Re: checking for valid date

by TedPride (Priest)
on Jul 30, 2006 at 16:54 UTC ( #564633=note: print w/ replies, xml ) Need Help??


in reply to checking for valid date

Just because I like to roll my own:

use strict; use warnings; while (<DATA>) { chomp; print "$_ : ", validate($_), "\n"; } BEGIN { my @mdays = (0,31,28,31,30,31,30,31,31,30,31,30,31); sub validate { no warnings; my ($year, $month, $day) = $_[0] =~ m/^(\d{4})(\d{2})(\d{2})$/ +; my $nyear = (localtime())[5] + 1900; ##### Year range is 10 years on either side of current year ##### Also exits if m// returned nothing return if $year < $nyear - 10 || $year > $nyear + 10; return if $month < 1 || $month > 12; ##### Leap year conditions if ($month == 2) { if ($year % 4 != 0) { $mdays[2] = 28; } elsif ($year % 400 == 0) { $mdays[2] = 29; } elsif ($year % 100 == 0) { $mdays[2] = 28; } else { $mdays[2] = 29; } } return if $day < 1 || $day > $mdays[$month]; return 1; } } __DATA__ 1234567 19991203 20051303 20051232 20040229 20050229 20401223


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