public function getBeginningBalance($param = array(), $month = 0)
{
$balance = 0;
//we are checking for the physical count of theis drug month before reporting period
$param['period_begin'] = date('Y-m-d', strtotime($param['period_begin'] . "-1 month"));
$balance = Cdrr_Item::getLastPhysicalStock($param['period_begin'], $param['drug_id'], $param['facility_id']);
if (!$balance && $month < 3) {
$month++;
$param['period_begin'] = date('Y-m-d', strtotime($param['period_begin'] . "-1 month"));
$balance = $this->getBeginningBalance($param, $month);
}
if ($balance == null) {
$balance = 0;
}
return $balance;
}
