我有一个脚本可以检索销售列表（npc_sales_list）中的所有数据行，但我想做的是设置一个下拉菜单来过滤结果，我不知道从哪里开始，因为我还没有完成任何 php 在一段时间内。
我试图做的主要过滤器是只查看上个月的销售额（npc_entry_date）和销售类型（npc_usertype）。如果有人能指出我正确的方向或向我展示一些很棒的资源链接。
我不关心过滤器是自动的还是您需要点击提交按钮。欢迎任何建议...
<?php
require_once ('./includes/config.inc.php');
$page_title = 'Page title';
include ('./includes/header.html');
if (!isset($_SESSION['admin_sp_id'])) {
$url = 'http://' . $_SERVER['HTTP_HOST']
. dirname($_SERVER['PHP_SELF']);
if ((substr($url, -1) == '/') OR (substr($url, -1) == '\\') ) {
$url = substr ($url, 0, -1);
}
$url .= '/login.php';
ob_end_clean();
header("Location: $url");
exit();
}
require_once ('database.php');
$display = 500;
if (isset($_GET['np'])) {
$num_pages = $_GET['np'];
} else {
$query = "SELECT COUNT(*) FROM npc_sales_list ORDER BY npc_entry_date DESC";
$result = @mysql_query ($query);
$row = mysql_fetch_array ($result, MYSQL_NUM);
$num_records = $row[0];
if ($num_records > $display) {
$num_pages = ceil ($num_records/$display);
} else {
$num_pages = 1;
}
}
if (isset($_GET['s'])) {
$start = $_GET['s'];
} else {
$start = 0;
}
$link1 = "{$_SERVER['PHP_SELF']}?sort=fna";
$link2 = "{$_SERVER['PHP_SELF']}?sort=lna";
if (isset($_GET['sort'])) {
switch ($_GET['sort']) {
case 'fna':
$order_by = 'sp_firstname ASC';
$link1 = "{$_SERVER['PHP_SELF']}?sort=fnd";
break;
case 'fnd':
$order_by = 'sp_firstname DESC';
$link1 = "{$_SERVER['PHP_SELF']}?sort=fna";
break;
case 'lna':
$order_by = 'sp_surname ASC';
$link2 = "{$_SERVER['PHP_SELF']}?sort=lnd";
break;
case 'lnd':
$order_by = 'sp_surname DESC';
$link2 = "{$_SERVER['PHP_SELF']}?sort=lna";
break;
default:
$order_by = 'npc_entry_date DESC';
break;
}
// $sort will be appended to the pagination links.
$sort = $_GET['sort'];
} else { // Use the default sorting order.
$order_by = 'npc_entry_date DESC';
$sort = 'drd';
}
$query = "SELECT us.sp_firstname , us.sp_surname , us.sp_amb_club_no , us.sp_position_title , us.sp_dealer_name ,
us.sp_dealer_code , us.sp_region , us.sp_department, sp_business_phone, us.sp_mobile_phone , us.sp_dealer_category, us.sp_email,
sa.npc_item_id , sa.npc_part_no, sa.npc_quantity, sa.npc_customer_name, sa.npc_registration_no , sa.npc_suo_no , sa.npc_amb_club_no , sa.npc_repair_order , sa.npc_invoice_no ,
sa.npc_entry_userdate, sa.npc_image_upload, sa.npc_usertype, sa.npc_points, sa.npc_bonus_points, sa.npc_active, sa.npc_entry_date,
DATE_FORMAT(sa.npc_entry_date, '%d-%m-%Y') AS dr , sa.sp_user_id
FROM sp_user AS us, npc_sales_list AS sa
WHERE us.sp_user_id = sa.sp_user_id
ORDER BY
$order_by LIMIT $start, $display";
$result = @mysql_query ($query);
// <a href="' . $link4 . '"></a>
// Table header.
echo '<table width="100%" cellspacing="1" cellpadding="4" style="font-size:10px;">
<tr>
<td align="center"><b>Invoice No.</b></td>
<td align="center"><a href="' . $link1 . '"><b>Member ID</b></a></td>
<td align="center"><a href="' . $link2 . '"><b>Surname</b></a></td>
<td align="center"><b>Part #</b></td>
<td align="center"><b>Sale Type</b></td>
<td align="center"><b>Qty</b></td>
<td align="center"><b>Invoice Date</b></td>
<td align="center"><b>Customer Rego</b></td>
<td align="center"><b>Submission Date</b></td>
<td align="center"><b>Status</b></td>
</tr>';
// Fetch and print all the records. echo '<td align="left"><strong>' . $row['sp_invoice_no'] . '</strong></td> ';
$bg = '#ffffff'; // Set the background color.
while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
$bg = ($bg=='#eaeced' ? '#ffffff' : '#eaeced');
echo '<tr bgcolor="' . $bg . '">';
echo '<td align="center"><strong><a href="audit_invoice.php?id=' . $row['npc_item_id'] . '">Details</a></strong></td> ';
echo '<td align="center"><strong>' . $row['sp_amb_club_no'] . '</strong></td> ';
echo '<td align="center"><strong>' . $row['sp_surname'] . '</strong></td> ';
echo '<td align="center"> <strong>' . $row['npc_part_no'] . '<strong></td>';
echo '<td align="center"> ' . $row['npc_usertype'] . ' </td>';
echo '<td align="center"> ' . $row['npc_quantity'] . ' </td>';
echo '<td align="center"> ' . $row['npc_entry_userdate'] . ' </td>';
echo '<td align="center"> ' . $row['npc_registration_no'] . ' </td>';
echo '<td align="center"> ' . $row['dr'] . ' </td>';
echo '<td align="center" style="color:#5a8e22; font-weight:bold;"> ' . $row['npc_active'] . ' </td>';
echo '</tr>
';
}
echo '</table>';
mysql_free_result ($result);
mysql_close();
if ($num_pages > 1) {
echo '<br /><p>';
$current_page = ($start/$display) + 1;
if ($current_page != 1) {
echo '<a href="view-all-sales.php?s=' . ($start - $display) . '&np=' .
$num_pages . '&sort=' . $sort .'">Previous</a> ';
}
for ($i = 1; $i <= $num_pages; $i++) {
if ($i != $current_page) {
echo '<a href="view-all-sales.php?s=' . (($display * ($i - 1))) .
'&np=' . $num_pages . '&sort=' . $sort .'">' . $i . '</a> ';
} else {
echo $i . ' ';
}
}
if ($current_page != $num_pages) {
echo '<a href="view-all-sales.php?s=' . ($start + $display) . '&np=' .
$num_pages . '&sort=' . $sort .'">Next</a> ';
}
echo '</p>';
}
include ('./includes/footer_admin_user.html');
?>