我想要实现的是按日期和时间对表格进行排序(首先是上午，然后是下午)。当我使用此代码尝试时(ORDER BY bookingdate DESC，reservationtime ASC)，这就是我得到的。
我对日期没有问题，但时间排序不正确。我想要的是先用“am”显示所有时间，然后用“pm”显示时间。
这是我获取日期和时间并将其插入数据库的方法
$reservationDate = date("F j, Y");
$reservationTime = date( g:i a");
$insertdata = "INSERT INTO reservations (reservationdate, reservationtime)VALUES('$reservationDate', '$reservationTime')";
这是显示它的代码
<?php
$query = "SELECT * FROM reservations ORDER BY reservationdate DESC, reservationtime ASC LIMIT " . $this_page_first_result . ',' . $results_per_page;
$search_result = filterTable($query);
?>
</div>
<!DOCTYPE html>
<html>
<head>
<title>Admin Control</title>
<link rel="stylesheet" type="text/css" href="styles.css">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
</head>
<body>
<form action="adminControl.php" method="GET">
<input id="searchBox" type="text" name="valueToSearch" placeholder="type information here">
<input id="searchButton" type="submit" name="search" value="Search">
<div style="overflow-x:auto;">
<table class="reservations-table">
<tr>
<th class="thFirstName">First Name</th>
<th class="thLastName">Last Name</th>
<th class="thEmailAddress">Email Address</th>
<th class="thContactNumber">Contact Number</th>
<th class="thSpeaker">Speaker</th>
<th class="thTopic">Topic</th>
<th class="thLocation">Location</th>
<th class="thAudience">Audience</th>
<th class="thCount">Count</th>
<th class="thTime">Time</th>
<th class="thDate">Date</th>
<th class="thAction">Reservation Date</th>
<th class="thAction">Reservation Time</th>
<th class="thAction">Status</th>
<th class="thAction">Action</th>
<th class="thAction">Action</th>
</tr>
<?php while($row = mysqli_fetch_array($search_result)):?>
<tr>
<td><?php echo $row['firstname'];?></td>
<td><?php echo $row['lastname'];?></td>
<td><?php echo $row['emailaddress'];?></td>
<td><?php echo $row['contactnumber'];?></td>
<td><?php echo $row['speaker'];?></td>
<td><?php echo $row['topic'];?></td>
<td><?php echo $row['location'];?></td>
<td><?php echo $row['audience'];?></td>
<td><?php echo $row['count'];?></td>
<td><?php echo $row['time'];?></td>
<td><?php echo $row['date'];?></td>
<td><?php echo $row['reservationdate']?></td>
<td><?php echo $row['reservationtime']?></td>
<td><?php echo $row['reservationstatus'];?></td>
<td><?php echo "<a style='padding:6px; float:left; background-color:#45a049; color:white; border-radius: 3px;' href='adminControl.php?epr=approve&speakerName=".$row['speaker']."&reservationStatus=".$row['reservationstatus']."&reservationId=".$row['id']."'>approve </a>";?></td>
<td><?php echo "<a style='padding:6px; float:left; background-color:red; color:white; border-radius: 3px;' href='adminControl.php?epr=delete&reservationId=".$row['id']."'>delete</a>";?></td>
</tr>
<?php endwhile;?>
</table>
</form>
</div>
</body>
</html>
最佳答案
据推测，reservationtime 存储为字符串，而不是时间。您应该使用适当的存储方法。
您可以使用str_to_date()轻松转换为时间:
order by str_to_date(reservationtime, '%l:%i %p')
这将考虑上午/下午。
关于mysql - 按上午和下午时间订购，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45661871/