如何在php中创建循环
我需要从一个给定的数据范围内选择名为booked的表中的数据,并从一个变量中显示数据,然后使用它从另一个表中选择并显示所选的数据,但当从booked表中选择的数据为多个时,变量中仅显示第一个数据以下是我的代码:如何在php中创建循环,php,mysql,Php,Mysql,我需要从一个给定的数据范围内选择名为booked的表中的数据,并从一个变量中显示数据,然后使用它从另一个表中选择并显示所选的数据,但当从booked表中选择的数据为多个时,变量中仅显示第一个数据以下是我的代码: $res1=mysqli_query($bd,"select * from booked where datefrom between '$from' and '$to' or dateto>='$from' and dateto='$to'"); $num1=mysqli_nu
$res1=mysqli_query($bd,"select * from booked where datefrom between '$from' and '$to' or dateto>='$from' and dateto='$to'");
$num1=mysqli_num_rows($res1);
if($num1>0)
{
for($y=0;$y<$row1=mysqli_fetch_assoc($res1);$y++)
{
$res=mysqli_query($bd,"select * from rooms where capacity>='$newcap' and room_number!='".$row1['roomnumber']."'");
while($row=mysqli_fetch_assoc($res))
{
echo'<div class="col-lg-4 col-md-4 col-sm-12">';
echo'<div class="newsBox">
<div class="thumbnail">
<figure><img src="reservation/img/rooms/'.$row['img'].'" width="230" height="150"></figure>
<div class="caption maxheight2">
<div class="box_inner">
<div class="box">
<a class="title"><strong>'.$row['name'].'</strong></p>
<b>'.$row['description'].'</b>
<p>'.$row['price'].'</p>
</div>
<a class="btn btn-default" href="info_pay.php?roomnumber='.$row['room_number'].'&roomtype='.$row['name'].'&from='.$_POST['from'].'&adult='.$_POST['adult'].'&child='.$_POST['child'].'&to='.$_POST['to'].'&roomprice='.$row['price'].'"><span class="glyphicon glyphicon-plus">Select this Room</span></a>
</div>
</div>
</div>
</div>';
echo'</div>';
}
}
}
$res1=mysqli_query($bd,“选择*从预订的日期,其中日期介于'$from'和'$to'之间,或日期到>='$from'和日期到='$to');
$num1=mysqli_num_行($res1);
如果($num1>0)
{
对于($y=0;$y您可能希望尝试使用不同的方法,因为它不太容易引用错误,下面是一个完整的示例,使用herdoc
循环mysqli
查询
<?php
$con=mysqli_connect("localhost","my_user","my_password","my_db");
// Check connection
if (mysqli_connect_errno())
{
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
$sql="select * from booked where datefrom between '$from' and '$to' or dateto>='$from' and dateto='$to'";
if ($result=mysqli_query($con,$sql))
{
while ($row=mysqli_fetch_row($result))
{
echo <<< LOL
<div class="col-lg-4 col-md-4 col-sm-12">
<div class="newsBox">
<div class="thumbnail">
<figure><img src="reservation/img/rooms/{$row['img']}" width="230" height="150"></figure>
<div class="caption maxheight2">
<div class="box_inner">
<div class="box">
<a class="title"><strong>{$row['name']}</strong></p>
<b>{$row['description']}</b>
<p>{$row['price']}</p>
</div>
<a class="btn btn-default" href="info_pay.php?roomnumber={$row['room_number']}&roomtype={$row['name']}&from={$_POST['from']}&adult={$_POST['adult']}&child={$_POST['child']}&to={$_POST['to']}&roomprice={$row['price']}"><span class="glyphicon glyphicon-plus">Select this Room</span></a>
</div>
</div>
</div>
</div>
</div>
LOL;
// Free result set
mysqli_free_result($result);
}
}
//close mysqli connection
mysqli_close($con);
?>
对不起,我只是一个初学者,你能帮我写代码吗?你应该解释一下你想让代码做什么,而粘贴的代码没有做到。这是一个度假酒店预订系统,就是表单预订。我需要做到的是,如果有人已经预订了他/她选择的日期,房间将隐藏在我能看到你的地方避免在循环内循环。