两个想法：

a) 您可以通过实现一些 javascript 来做到这一点，它会在选择更改后切换每张票的显示状态。

if ($_SESSION['staff'] >='6')
{

    echo "<select name='type' id='type' onchange='typeChanged()' onpropertychange='typeChanged()'>
    <option value='tab1'>Open Tickets</option>
    <option value='tab2'>New Tickets</option>
    <option value='tab3'>Under Review</option>
    <option value='tab4'>Closed Tickets</option>
    </select><BR>"; 
    echo "Current listed support tickets: <BR><BR>";

    echo "<div id="tab1" name="tabs">";
            $result1 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket' OR 'Under Review'");
            while ($row1 = mysql_fetch_array($result1))
            {
                $ticket1 = $row1['TicketID'];
                $user1 = $row1['name'];
                echo "Ticket ID: " . $row1['TicketID'] . "<BR>" . $row1['type'] . "<BR>Subject: " . $row1['subject'] . "<BR>Ticket Status: " . $row1['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket1' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user1' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    echo "</div>";

    echo "<div id="tab2" name="tabs">";
            $result2 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket'");
            while ($row2 = mysql_fetch_array($result2))
            {
                $ticket2 = $row2['TicketID'];
                $user2 = $row2['name'];
                echo "Ticket ID: " . $row2['TicketID'] . "<BR>" . $row2['type'] . "<BR>Subject: " . $row2['subject'] . "<BR>Ticket Status: " . $row2['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket2' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user2' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    echo "</div>";

    echo "<div id="tab3" name="tabs">";
            $result3 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket'");
            while ($row3 = mysql_fetch_array($result3))
            {
                $ticket3 = $row3['TicketID'];
                $user3 = $row3['name'];
                echo "Ticket ID: " . $row3['TicketID'] . "<BR>" . $row3['type'] . "<BR>Subject: " . $row3['subject'] . "<BR>Ticket Status: " . $row3['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket3' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user3' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    echo "</div>";

    echo "<div id="tab4" name="tabs">";
            $result4 = mysql_query("SELECT * FROM support WHERE status = 'Closed'");
            while ($row4 = mysql_fetch_array($result4))
            {
                $ticket4 = $row4['TicketID'];
                $user4 = $row4['name'];
                echo "Ticket ID: " . $row4['TicketID'] . "<BR>" . $row4['type'] . "<BR>Subject: " . $row4['subject'] . "<BR>Ticket Status: " . $row4['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket4' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user4' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    echo "</div>";


    echo "Click <A href='overview_page.php'>HERE</A> to return to the overview page.<BR>";
    echo "Click <A href='uitlogen_user.php'>HERE</A> to logout!<BR>";
}else
{
    echo "You need to be an GM or Admin to view this page!<BR>";
    echo "Click <A href='uitlogen_user.php'>HERE</A> to login!";
}

?>

<script type="text/javascript">
function typeChanged()
{
    var chosen = document.getElementById('type').value;
    var tabs = document.getElementsByName('tabs');
    for (var i in tabs)
    {
        tabs[i].style.display = 'none';
    }
    document.getElementById(chosen).style.display = 'block';
}
</script>

b) 使用一些 url 参数重定向到该页面，指示选择了哪个票证，并显示相应的票证。

<?PHP
session_start();
include('connection.php');

if ($_SESSION['staff'] >='6')
{
    $chosen = isset($_GET['chosen']) ? $_GET['chosen'] : 'tab1';

    echo "<select name='type' id='type' onchange='typeChanged()' onpropertychange='typeChanged()'>
    <option value='tab1'>Open Tickets</option>
    <option value='tab2'>New Tickets</option>
    <option value='tab3'>Under Review</option>
    <option value='tab4'>Closed Tickets</option>
    </select><BR>"; 
    echo "Current listed support tickets: <BR><BR>";

    if ($chosen == 'tab1')
    {
            $result1 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket' OR 'Under Review'");
            while ($row1 = mysql_fetch_array($result1))
            {
                $ticket1 = $row1['TicketID'];
                $user1 = $row1['name'];
                echo "Ticket ID: " . $row1['TicketID'] . "<BR>" . $row1['type'] . "<BR>Subject: " . $row1['subject'] . "<BR>Ticket Status: " . $row1['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket1' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user1' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    }

    if ($chosen == 'tab2')
    {
            $result2 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket'");
            while ($row2 = mysql_fetch_array($result2))
            {
                $ticket2 = $row2['TicketID'];
                $user2 = $row2['name'];
                echo "Ticket ID: " . $row2['TicketID'] . "<BR>" . $row2['type'] . "<BR>Subject: " . $row2['subject'] . "<BR>Ticket Status: " . $row2['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket2' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user2' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    }

    if ($chosen == 'tab3')
    {
            $result3 = mysql_query("SELECT * FROM support WHERE status = 'New Ticket'");
            while ($row3 = mysql_fetch_array($result3))
            {
                $ticket3 = $row3['TicketID'];
                $user3 = $row3['name'];
                echo "Ticket ID: " . $row3['TicketID'] . "<BR>" . $row3['type'] . "<BR>Subject: " . $row3['subject'] . "<BR>Ticket Status: " . $row3['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket3' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user3' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    }

    if ($chosen == 'tab4')
    {
            $result4 = mysql_query("SELECT * FROM support WHERE status = 'Closed'");
            while ($row4 = mysql_fetch_array($result4))
            {
                $ticket4 = $row4['TicketID'];
                $user4 = $row4['name'];
                echo "Ticket ID: " . $row4['TicketID'] . "<BR>" . $row4['type'] . "<BR>Subject: " . $row4['subject'] . "<BR>Ticket Status: " . $row4['status'] . "<BR>";
                echo "<form action='detail_ticket.php?t=$ticket4' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
                echo "<form action='reply_ticket.php?r=$user4' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
            }
    }


    echo "Click <A href='overview_page.php'>HERE</A> to return to the overview page.<BR>";
    echo "Click <A href='uitlogen_user.php'>HERE</A> to logout!<BR>";
}else
{
    echo "You need to be an GM or Admin to view this page!<BR>";
    echo "Click <A href='uitlogen_user.php'>HERE</A> to login!";
}

?>

<script type="text/javascript">
function typeChanged()
{
    var chosen = document.getElementById('type').value;
    window.location.href = 'FILENAME.php?chosen=' + chosen;
}
</script>

这是一个未经测试（我没有您的数据库）的示例，说明 AJAX 如何为您工作。

如果您已经知道这一点，请原谅我，但 AJAX 并不是什么花哨的 - 它是一种简单的方法，允许您从 javascript 调用另一个 PHP 文件。

AJAX 的工作原理是让第二个 PHP 文件完成下一点工作，并将结果返回给 javascript。流程如下：

在 File1 中，javascript/jQuery 获取用户选择的选项并“调用”（AJAX）第二个 PHP 文件，传递用户的选择。实现这一点的代码在这一点下：

$('#type').change( function() { //grab the new value, send to File2 via AJAX });

File2（在本例中命名为“another_php_file.php”）（a）接收从 File1 发送的 POST 值，（b）执行数据库查找，（c）构建新的 HTML，以及（d）回显构造的代码（在我称为 $x) 的变量中返回 File1

现在，这非常重要：File1 接收 AJAX 例程success:函数内的新代码。在这个成功函数中，它可以使用 jQuery 更新 File1 中的 div。如果您希望用户按下可用于进行另一次 AJAX 查找的其他按钮，则下一次 AJAX 查找也必须在此成功函数中。

无论如何，这应该回答您的直接问题：

文件 1

<?php
    session_start();
    include('connection.php');
?>
<html>
    <head>
        <script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
        <script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js"></script>
        <link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css" />

        <script type="text/javascript">
            $(document).ready(function() {

                $('#type').change( function() {
                    var chosen = $(this).val();
                    alert('You chose: ' + chosen);

                    $.ajax({
                        type: "POST",
                        url: "another_php_file.php",
                        data: 'theOption=' + chosen,
                        success: function(whatigot) {
//alert('Server-side response: ' + whatigot);
                            $('#report').html(whatigot);
                            $('#theButton').click(function() {
                                alert('You clicked the button');
                            });
                        } //END success fn
                    }); //END $.ajax
                }); //END dropdown change event
            }); //END $(document).ready()

        </script>
    </head>
<body>

<?php

if ($_SESSION['staff'] >='6')
{
    //Note: the value text string MUST MATCH the value stored in the database, because it is this exact string you will search for in the 2nd php (AJAX) file.
    echo "<select name='type' id='type'>
        <option value='Open Ticket'>Open Tickets</option>
        <option value='New Ticket'>New Tickets</option>
        <option value='Under Review'>Under Review</option>
        <option value='Closed'>Closed Tickets</option>
    </select><br><br>
    <div id='report'></div>"; 

}else
{
    echo "You need to be an GM or Admin to view this page!<BR>";
    echo "Click <A href='uitlogen_user.php'>HERE</A> to login!";
}

?>

文件 2 - 在本例中必须称为“another_php_file.php”。如果更改名称，还必须更改上述 AJAX 代码段中的文件名：

<?php
$chosen = $_POST['theOption'];
//die('You clicked: ' . $chosen);

if ($chosen == 'New Ticket') {
    $result = mysql_query("SELECT * FROM support WHERE status = '$chosen' OR 'Under Review'");
    while ($row1 = mysql_fetch_array($result1))
    {
        $ticket1 = $row1['TicketID'];
        $user1 = $row1['name'];
        $x =  "Ticket ID: " . $row1['TicketID'] . "<BR>" . $row1['type'] . "<BR>Subject: " . $row1['subject'] . "<BR>Ticket Status: " . $row1['status'] . "<BR>";
        $x .= "<form action='detail_ticket.php?t=$ticket1' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
        $x .= "<form action='reply_ticket.php?r=$user1' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
    }
}else{
    $result = mysql_query("SELECT * FROM support WHERE status = '$chosen'");
    while ($row1 = mysql_fetch_array($result1))
    {
        $ticket1 = $row1['TicketID'];
        $user1 = $row1['name'];
        $x = "Ticket ID: " . $row1['TicketID'] . "<BR>" . $row1['type'] . "<BR>Subject: " . $row1['subject'] . "<BR>Ticket Status: " . $row1['status'] . "<BR>";
        $x .= "<form action='detail_ticket.php?t=$ticket1' method='post' name='detail_t' id='detail_t'><input type='submit' name='detail_b' id='detail_b' value='View Ticket!'></form>";
        $x .= "<form action='reply_ticket.php?r=$user1' method='post' name='r_ticket' id='r_ticket'><input type='submit' name='reply_b' id='reply_b' value='Reply on Ticket!'></form>";
    }
}

$x .= "Click <A href='overview_page.php'>HERE</A> to return to the overview page.<br>";
$x .= "Click <A href='uitlogen_user.php'>HERE</A> to logout!<br><br>";
$x .= "<input type='button' id='theButton' value='Click Me Example'>";

echo $x;

乍一看，这可能看起来很复杂，所以这里是 AJAX 的另一个示例，非常简化。请将其复制/粘贴到您自己服务器上的文件中，看看它是如何工作的。这真的很简单。