我在第一篇文章中并不清楚。所以就是这样。
reservation.php
<table style="border: 4px;">
<tr>
<!-- Start JQuery Pop-up -->
<script src="js/jquery.js" type="text/javascript"></script>
<script src="popup2.js" type="text/javascript"></script>
<td style="border: 2px solid #000;"><center><img src="images/comp.jpg" height="30" width="50"><br /><b><div id="button"><a href="#" class="pcbutton">PC 05</a></div></b></center>
</td>
<!-- Jquery Pop-Up code starts here including the insert query -->
<?php
echo '<div id="popupContact">';
echo '<a id="popupContactClose">x</a>';
echo '<center><form method = "POST" action="reserve.php">';
mysql_connect("localhost","root","") or die (mysql_error());
mysql_select_db('seat_reservation') or die (mysql_error());
$roomNumber = '400';
$chairNumber = 5;
//In this part, I try to insert in the database without submitting the form yet.
$insert = mysql_query("INSERT INTO reservation (chair_status, room_id, chair_number) VALUES (0, '$roomNumber', '$chairNumber')");
//I'm trying to retrieve the inserted data and do the checking.
$query = mysql_query("SELECT * FROM reservation WHERE room_id = '$roomNumber' AND chair_number = '$chairNumber'");
$row = mysql_fetch_assoc($query);
$_SESSION['roomno'] = $row['room_id'];
$_SESSION['chairnum'] = $row['chair_number'];
echo '<h1>Information </h1>';
echo 'Fullname : <input type="text" name="student_name" /><br /><br />';
echo 'Student ID No. : <input type="text" name="stud_id" />';
echo '<br /><br />';
echo '<input type="submit" value="Submit" />';
echo '</form></center>';
echo '</div>';
echo '<div id="backgroundPopup"></div>';
?>
<!-- End JQuery Pop-up -->
<td style="border: 2px solid #000;"><center><img src="images/comp.jpg" height="30" width="50"><br /><div id="button2"><a href="#" class="pcbutton"><b>PC 04</b></a></div></center>
</td>
//This is another table that's exactly the same from the code above only that this has a different PC number
<?php
echo '<div id="popupContact">';
echo '<a id="popupContactClose">x</a>';
echo '<center><form method = "POST" action="reserve.php">';
mysql_connect("localhost","root","") or die (mysql_error());
mysql_select_db('seat_reservation') or die (mysql_error());
$roomNumber = '400';
$chairNumber = 4;
$insert = mysql_query("INSERT INTO reservation (chair_status, room_id, chair_number) VALUES (0, '$roomNumber', '$chairNumber')");
$query = mysql_query("SELECT * FROM reservation WHERE room_id = '$roomNumber' AND chair_number = '$chairNumber'");
$row = mysql_fetch_assoc($query);
$_SESSION['roomno'] = $row['room_id'];
$_SESSION['chairnum'] = $row['chair_number'];
echo '<h1>Information </h1>';
echo 'Fullname : <input type="text" name="student_name" /><br /><br />';
echo 'Student ID No. : <input type="text" name="stud_id" />';
echo '<br /><br />';
echo '<input type="submit" value="Submit" />';
echo '</form></center>';
echo '</div>';
echo '<div id="backgroundPopup"></div>';
?>
reserve.php
<?php
session_start();
$name = $_POST['student_name'];
$stud_id = $_POST['stud_id'];
$room_id = $_SESSION['roomno'];
$chair_num = $_SESSION['chairnum'];
mysql_connect("localhost", "root", "") or die (mysql_error());
mysql_select_db('seat_reservation') or die (mysql_error());
$query = mysql_query("SELECT * FROM reservation WHERE room_id = '$room_id' AND chair_number = '$chair_num'");
$row = mysql_fetch_assoc($query);
if($row['chair_status'] == 0)
{
$insert = mysql_query("UPDATE reservation SET chair_status = 1, student_name = '$name', stud_id = '$stud_id' WHERE room_id = '$room_id' AND chair_number = '$chair_num'");
if($insert)
die ("Seat reserved! <br />Redirecting...<meta http-equiv='refresh' content=2;reservation.php>");
else
die ("Try Again! <br />Redirecting...<meta http-equiv='refresh' content=2;reservation.php>");
}
else
die ("Sorry, seat taken! <br />Redirecting...<meta http-equiv='refresh' content=2;reservation.php>");
?>
以下是座位预订的屏幕截图：
LINK：[注意：将[DOT]更改为。] HTTPS：//fbcdn-sphotos-a.akamaihd [点]净/ hphotos-AK-AsH 3 / 599637_4018881323775_858410964_n.jpg
以下是点击PC时弹出窗口的屏幕截图：
LINK：[注意：将[DOT]更改为。] HTTPS：//fbcdn-sphotos-a.akamaihd [点]净/ hphotos-AK-AsH 3 / 599637_4018881323775_858410964_n.jpg
问题：应用插入代码仅适用于一台PC，例如PC 05.在上面的代码中，我将插入代码应用于PC 05和PC 04仅作为测试但我想在所有PC中应用它。但仅在PC 05和PC 04中应用它并不能使它工作。在数据库中，单击提交按钮后，这些是唯一插入的内容（注意：room_id是房间号）：
LINK：https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash3/527207_4018929644983_1759106011_n.jpg
每个学生都应该在这个特定的教室里预留座位。当Student.A点击PC 05作为他的座位时，应该为他保留。当Student.B再次点击PC 01作为他的座位时，应该为他保留。有多个教室，我使用了JQuery选项卡。我想在数据库中拥有的是这个（注意：仅手动插入）：
LINK：https://fbcdn-sphotos-a.akamaihd.net/hphotos-ak-ash4/376602_4018990806512_1150698954_n.jpg
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答案 0 :(得分：0)
你的代码有点不完整。不要单独使用mysql_query。包括额外的代码以捕获错误或在插入数据时发生错误时显示输出。
$insert = mysql_query("INSERT INTO reservation (chair_status, room_id, chair_number) VALUES (0, 400, 5)");
// I added the below lines to catch how many rows were inserted and if not, what error occured
$inserted_rows = mysql_affected_rows();
if ($inserted_rows !=0)
echo 'Error occurred, through out error'. mysql_error();
答案 1 :(得分：0)
首先为您的提交按钮命名，以便您可以使用它来检查表单是否已提交：
if($_POST['name_of_your_submit_button']){
//mysql insert code here
}
我不知道你是否在插入查询中实际使用了用户输入的数据：
$insert = mysql_query("INSERT INTO reservation (chair_status, room_id, chair_number) VALUES (0, 400, 5)");
通过使用print_r或var_dump
之类的调试代码确保获得一些值print_r($_POST);