function display()
{
extract($_REQUEST);
$fields = array();
$fields["from_year"] = date("Y");
$fields["from_month"] = date("m");
$fields["from_day"] = "01";
$fields["to_year"] = date("Y");
$fields["to_month"] = date("m");
$fields["to_day"] = date("d");
$fields["prd"] = "daily";
$fields["increase"] = 0;
$fields["decrease"] = 0;
extract($fields, EXTR_SKIP);
$from_date = "{$from_year}-{$from_month}-{$from_day}";
$to_date = "{$to_year}-{$to_month}-{$to_day}";
$sql = "SELECT stkid, stkcod, stkdes, minlvl, maxlvl, units FROM cubit.stock";
$stock_rslt = db_exec($sql) or errDie("Unable to retrieve stock.");
$stock_out = "";
$tot_avail = 0;
while ($stock_data = pg_fetch_array($stock_rslt)) {
$tmp_min = $suggested_min = averageSalesQty($stock_data["stkid"], $from_date, $to_date, $prd);
$tmp_max = $suggested_max = maxSalesQty($stock_data["stkid"], $prd);
$suggested_min += $tmp_min / 100 * $increase;
$suggested_min -= $tmp_min / 100 * $decrease;
$suggested_max += $tmp_max / 100 * $increase;
$suggested_max -= $tmp_max / 100 * $decrease;
$stock_out .= "\n\t\t\t<tr class='" . bg_class() . "'>\n\t\t\t\t<td>{$stock_data['stkcod']}</td>\n\t\t\t\t<td>{$stock_data['stkdes']}</td>\n\t\t\t\t<td align='center'><b>{$stock_data['minlvl']}</b></td>\n\t\t\t\t<td align='center'><b>{$stock_data['maxlvl']}</b></td>\n\t\t\t\t<td align='center'>\n\t\t\t\t\t<b>{$suggested_min}</b>\n\t\t\t\t</td>\n\t\t\t\t<td align='center'>\n\t\t\t\t\t<b>" . sprint3($suggested_max) . "</b>\n\t\t\t\t</td>\n\t\t\t\t<td align='center'><b>" . sprint3($stock_data['units']) . "</b></td>\n\t\t\t</tr>";
if ($stock_data['units'] > 0) {
$tot_avail += $stock_data['units'];
}
}
$stock_out .= "\n\t\t\t\t\t<tr class='" . bg_class() . "'>\n\t\t\t\t\t\t<td colspan='6'><b>Total: (Positive amounts only)</b></td>\n\t\t\t\t\t\t<td align='center'><b>" . sprint3($tot_avail) . "</b></td>\n\t\t\t\t\t</tr>\n\t\t\t\t";
$prds = array("daily", "weekly", "monthly");
$prd_sel = "<select name='prd'>";
foreach ($prds as $prd_val) {
if ($prd_val == $prd) {
$sel = "selected='selected'";
} else {
$sel = "";
}
$prd_sel .= "<option value='{$prd_val}' {$sel}>" . ucfirst($prd_val) . "</option>";
}
$OUTPUT = "\n\t\t<center>\n\t\t<h3>Minimum and Maximum Stock Levels</h3>\n\t\t<form method='POST' action='" . SELF . "'>\n\t\t<table " . TMPL_tblDflts . ">\n\t\t\t<tr>\n\t\t\t\t<th colspan='4'>Date Range</th>\n\t\t\t</tr>\n\t\t\t<tr class='" . bg_class() . "'>\n\t\t\t\t<td>" . mkDateSelect("from", $from_year, $from_month, $from_day) . "</td>\n\t\t\t\t<td> <b> To </b> </td>\n\t\t\t\t<td>" . mkDateSelect("to", $to_year, $to_month, $to_day) . "</td>\n\t\t\t\t<td rowspan='2'>\n\t\t\t\t\t<input type='submit' value='Calculate' style='height: 100%; font-weight: bold' />\n\t\t\t\t</td>\n\t\t\t</tr>\n\t\t\t<tr class='" . bg_class() . "'>\n\t\t\t\t<td colspan='3' align='center'>{$prd_sel}</td>\n\t\t\t</tr>\n\t\t\t<tr class='" . bg_class() . "'>\n\t\t\t\t<td colspan='4' align='center'>\n\t\t\t\t\t<table " . TMPL_tblDflts . " width='100%'>\n\t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t<th>Increase</th>\n\t\t\t\t\t\t\t<th>Decrease</th>\n\t\t\t\t\t\t</tr>\n\t\t\t\t\t\t<tr>\n\t\t\t\t\t\t\t<td width='50%' align='center'>\n\t\t\t\t\t\t\t\t<input type='text' name='increase' value='{$increase}' size='3' />%\n\t\t\t\t\t\t\t</td>\n\t\t\t\t\t\t\t<td width='50%' align='center'>\n\t\t\t\t\t\t\t\t<input type='text' name='decrease' value='{$decrease}' size='3' />%\n\t\t\t\t\t\t\t</td>\n\t\t\t\t\t\t</tr>\n\t\t\t\t\t</table>\n\t\t\t\t</td>\n\t\t\t</tr>\n\t\t</table>\n\t\t</form>\n\t\t<table " . TMPL_tblDflts . ">\n\t\t\t<tr>\n\t\t\t\t<th>Stock Code</th>\n\t\t\t\t<th>Stock Description</th>\n\t\t\t\t<th>Current Minimum</th>\n\t\t\t\t<th>Current Maximum</th>\n\t\t\t\t<th>Suggested Minimum</th>\n\t\t\t\t<th>Suggested Maximum</th>\n\t\t\t\t<th>Currently On Hand</th>\n\t\t\t</tr>\n\t\t\t{$stock_out}\n\t\t</table>\n\t\t</center>";
return $OUTPUT;
}
function orderDate($stkid, $from_date, $to_date)
{
$sql = "SELECT minlvl FROM cubit.stock WHERE stkid='{$stkid}'";
$min_rslt = db_exec($sql) or errDie("Unable to retrieve stock minimum stock level.");
$min = pg_fetch_result($min_rslt, 0);
if (empty($min)) {
$min = 0;
}
$from_time = strtotime($from_date);
$to_time = strtotime(date("Y-m-t", $from_time));
$sales = averageSalesQty($stkid, date("Y-m-d", $from_time), date("Y-m-d", $to_time), "DAILY");
if ($sales <= $min) {
return date("Y-m-d");
} else {
$tmp_sales = $sales;
$ret = 0;
while ($tmp_sales > $min) {
$to_time = $from_time * (1 * (60 * 60 * 24));
$tmp_sales = averageSalesQty($stkid, date("Y-m-d", $from_time), date("Y-m-d", $to_time), "MONTHLY");
$ret = 1;
}
if ($ret) {
return date("Y-m-d", $to_time);
}
}
return;
}
