Question

我在php，mysql和jquery中制作了一个简单的产品过滤器。我有一个名为＆＃34; spec_laptop＆＃34;的数据库。我选择名为＆＃34;品牌＆＃34;的专栏之后的产品。 It looks like here当我检查时，会向我显示带有＆＃34;品牌＆＃34;的产品。我想在每个复选框选项之前添加，这个＆＃34;品牌＆＃34;的产品数量。在数据库like this。

代码： PHP：

<?php
include ('connect.php');
if (isset($_POST["toshiba"])) {
  $arguments[] = "brand LIKE '%Toshiba%'";  
}
if (isset($_POST["lenovo"])) {
  $arguments[] = "brand LIKE '%Lenovo%'"; 
}
if (isset($_POST["samsung"])) {
  $arguments[] = "brand LIKE '%Samsung%'";
}
if(!empty($arguments)) {
  $str = implode(' or ',$arguments);
  $qry = "SELECT * FROM spec_laptop where " . $str . " ORDER BY id desc"; 
  $row=mysql_query($qry)  or die("Unable to select");


   while($data = mysql_fetch_array($row))
                            {

                                echo  $data['procesor']." ";
                            }

} else {
  echo "nothing";
}
?>

HTML＆amp; JAVASCRIPT：

<html>
<head>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>

<form id="form" method="post" action="">
<input type="checkbox" name="toshiba" class="checkbox" <?=(isset($_POST['toshiba'])?' checked':'')?>/>Toshiba<?php ?><br>
<input type="checkbox" name="lenovo" class="checkbox" <?=(isset($_POST['lenovo'])?' checked':'')?>/> Lenovo<br>
<input type="checkbox" name="samsung" class="checkbox" <?=(isset($_POST['samsung'])?' checked':'')?>/>Samsung<br>
 </form>

 <script type="text/javascript">  
    $(function(){
     $('.checkbox').on('change',function(){
        $('#form').submit();
        });
    });
</script>

</body>
</html>

Answer 1

要查询您的查询，请将其更改为：

$qry = "SELECT * FROM spec_laptop where " . $str . " ORDER BY id desc";

为：

$qry = "SELECT *, count(id) as 'count' FROM spec_laptop where " . $str . " GROUP BY brand ORDER BY id desc";

你的HTML代码好像是在php文件中，因为你也在那里使用php短代码。因此，我建议使用php通过选择查询和循环显示选项。可以使用与上述类似的查询：

<?php
$qry = "SELECT brand as 'brandname', count(id) as 'count' FROM spec_laptop where " . $str . " GROUP BY brand ORDER BY id desc";
$row=mysql_query($qry)  or die("Unable to select");
?>
<form id="form" method="post" action="">
<?php
while($data = mysql_fetch_array($row))
{
?>
    <input type="checkbox" name="<?php echo $data['brandname'];?>" class="checkbox" <?php (isset($_POST['toshiba'])?' checked':'') ?>/><?php echo $data['brandname'] . ' [' . $data['count'] . ']';?><br>
<?php
}
?>

产品过滤器 - 计数产品

1 个答案: