/**
* Returns date of the first day of previous month of given date
*
* @param mixed $dummy irrelevant parameter
* @param int $month the month, default is current local month
* @param int $year the year in four digit format, default is current
* local year
* @param string $format the string indicating how to format the output
*
* @return string the date in the desired format
* @access public
* @static
* @see Date_Calc::beginOfMonthBySpan()
* @deprecated Method deprecated in Release 1.4.4
*/
function beginOfPrevMonth($dummy = null, $month = 0, $year = null, $format = DATE_CALC_FORMAT)
{
if (is_null($year)) {
$year = Date_Calc::dateNow('%Y');
}
if (empty($month)) {
$month = Date_Calc::dateNow('%m');
}
list($hn_pmyear, $hn_prevmonth) = Date_Calc::prevMonth($month, $year);
return Date_Calc::dateFormat(Date_Calc::getFirstDayOfMonth($hn_prevmonth, $hn_pmyear), $hn_prevmonth, $hn_pmyear, $format);
}