function check_data()
{
if (!is_date($_POST['from_date']) || is_date_in_fiscalyears($_POST['from_date'])) {
display_error(_("Invalid BEGIN date in fiscal year."));
set_focus('from_date');
return false;
}
if (!is_date($_POST['to_date']) || is_date_in_fiscalyears($_POST['to_date'])) {
display_error(_("Invalid END date in fiscal year."));
set_focus('to_date');
return false;
}
if (!check_begin_end_date($_POST['from_date'], $_POST['to_date'])) {
display_error(_("Invalid BEGIN or END date in fiscal year."));
set_focus('from_date');
return false;
}
if (date1_greater_date2($_POST['from_date'], $_POST['to_date'])) {
display_error(_("BEGIN date bigger than END date."));
set_focus('from_date');
return false;
}
return true;
}
} elseif (input_num('amount', 0) == 0.0) {
display_error(_("The amount can not be 0."));
set_focus('periods');
$input_error = 1;
} elseif (input_num('periods', 0) < 1) {
display_error(_("The periods must be greater than 0."));
set_focus('periods');
$input_error = 1;
}
if ($input_error == 0) {
$periods = input_num('periods');
$per = $periods - 1;
$date = $date_ = get_post('date_');
$freq = get_post('freq');
$lastdate = $freq == 1 ? add_days($date_, 7 * $per) : ($freq == 2 ? add_days($date_, 14 * $per) : ($freq == 3 ? add_months($date_, $per) : add_months($date_, 3 * $per)));
if (!is_date_in_fiscalyears($lastdate, false)) {
display_error(_("Some of the period dates are outside the fiscal year. Create a new fiscal year first!"));
set_focus('date_');
$input_error = 1;
}
if ($input_error == 0) {
$amount = input_num('amount');
$am = round2($amount / $periods, user_price_dec());
if ($am * $periods != $amount) {
$am0 = $am + $amount - $am * $periods;
} else {
$am0 = $am;
}
if (get_post('memo_') != "") {
$memo = $_POST['memo_'];
} else {
