如何在php下拉列表中获取所选值？ [英] How do I get the selected value in a php drop down list?
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问题描述
我有一个从SQL获取其值的下拉列表。当用户选择我想将其存储在变量中的值时。目前，当我从下拉列表中选择一个值时，它不会显示该值。
似乎它选择了一个值，我不知道知道为什么吗？
这是我的代码：
I have a drop down list that gets its values from SQL. When a user selects a value I want to store it in a variable. Currently I when I select a value from my drop down list, it doesn't display that value.
It seems that it pr-selects a value and I don't know why?
Here is my code:
<html>
<HEAD>
<link rel="stylesheet" type="text/css" href="mytech.css">
</HEAD>
<body>
<?php
session_start();
if(isset($_SESSION['DeskFusername']))
{
$config = parse_ini_file("noc.ini", true);
$serverName = $config['server']['SQLserver'];
$connectionInfo = $config['connectionInfo'];
$connectionInfo["LoginTimeout"] = 5;
$conn = sqlsrv_connect($serverName, $connectionInfo);
$tsql = "SELECT userId, EmailAdd
FROM [Dashboard].[dbo].[EA_t_Master_Users]";
?>
<table id="UserRoles" width="500" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="UserRoles" method="post" action="1.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Create User Login</strong></td>
</tr>
<td>User Name</td>
<td>:</td>
<td>
<select name="UserName" id="UserName">
<?PHP
echo "<option value=\"\" disabled=\"disabled\" selected=\"selected\">Please select a Customer</option>";
$stmt = sqlsrv_query( $conn, $tsql);
if( $stmt === false )
{
echo "Error in executing query.<br/>";
die( print_r( sqlsrv_errors(), true));
}
while ($row=sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC)) {
if($row['EmailAdd'] == $_POST['UserName'])
{
$isSel = " selected";
}
else
{
$isSel = "";
}
echo "<option value=\"".$row['EmailAdd']."\">".$row['EmailAdd']."</option>";
$UserName = $row['EmailAdd'];
}
//
?>
</select>
</td>
</tr>
<tr>
<td>
<?php
echo $UserName;
?>
</td>
</tr>
</table>
</td>
</form>
</tr>
</table>
<?PHP
}
else
{
header("location:loginTry1.php");
}
?>
</body>
</html>
推荐答案
_SESSION ['DeskFusername']））
{
_SESSION['DeskFusername'])) {
config = parse_ini_file（ noc.ini， true）;
config = parse_ini_file("noc.ini", true);
serverName =
serverName =
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