Here's some code to generate the date range for the previous month. You'll want it formatted differently if using it for queries, however. 
use strict;
use warnings;

my (@mon, $mon, $year);
@mon = (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

($mon, $year) = (localtime(time))[4,5];

$year += 1900 if $year < 2000;
if ($mon == 0) {
    $mon = 12;
    $year--;
}
if ($mon == 2) {
    if ($year % 4 != 0) {
        $mon[1] = 28;
    }
    elsif ($year % 400 == 0) {
        $mon[1] = 29;
    }
    elsif ($year % 100 == 0) {
        $mon[1] = 28;
    }
    else {
        $mon[1] = 29;
    }
}
$year = $year % 100;

print sprintf('%02d/%02d/%02d', $mon, 1, $year),
      " through ",
      sprintf('%02d/%02d/%02d', $mon, $mon[$mon-1], $year);

[download]

In reply to Re: perl script to calculate beg and end of current month by TedPride
in thread perl script to calculate beg and end of current month by Anonymous Monk

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.