如何使用php在while循环中获取一次category值
这是我的代码,我使用while循环从数据库中获取行值如何使用php在while循环中获取一次category值,php,sql,Php,Sql,这是我的代码,我使用while循环从数据库中获取行值 <?php $query = "SELECT I.itemid AS itemid, C.catid AS catid, C.name AS cname, I.name AS iname, I.price As price FROM tbl_item I INNER JOIN tbl_menu_category C ON I.catid=C.catid;" $sql = mysqli_query($con, $query);
<?php
$query = "SELECT I.itemid AS itemid, C.catid AS catid, C.name AS cname, I.name AS iname, I.price As price FROM tbl_item I INNER JOIN tbl_menu_category C ON I.catid=C.catid;"
$sql = mysqli_query($con, $query);
while($row=mysqli_fetch_array($sql)) { ?>
<ul class="menu-cat" id="menu<?php echo $row['catid'];?>">
<li>
<h5><?php echo $row['cname'];?></h5>
<span><?php echo $row['iname'];?></span>
<span style="float:right"><?php echo $row['iprice'];?></span>
<span><i class="fa fa-plus-circle" aria-hidden="true"></i></span>
</li>
</ul>
<?php } ?>
一切正常,但我想类别出现一次,因为它是显示多次
范例
类别1
洋娃娃25
类别1
汽车50
类别2
礼服400
类别2
礼物100
我想展示如下
第1类
洋娃娃25
汽车50
第2类
礼服400
礼物100
我将如何实现相同的功能???存储迭代的最后一个类别的名称,并将其与当前类别进行比较。如果不同,请打印;如果不同,请不要:
<?php
$query = "SELECT I.itemid AS itemid, C.catid AS catid, C.name AS cname, I.name AS iname, I.price As price FROM tbl_item I INNER JOIN tbl_menu_category C ON I.catid=C.catid;"
$sql = mysqli_query($con, $query);
$lastCategory = null;
while($row=mysqli_fetch_array($sql)) {
?>
<ul class="menu-cat" id="menu<?php echo $row['catid'];?>">
<li>
<?php if ($lastCategory === null || $lastCategory !== $row["cname"]):?> <h5><?php echo $row['cname'];?></h5><?php endif;?>
<span><?php echo $row['iname'];?></span>
<span style="float:right"><?php echo $row['iprice'];?></span>
<span><i class="fa fa-plus-circle" aria-hidden="true"></i></span>
</li>
</ul>
<?php
$lastCategory = $row["cname"];
}
?>