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php - 如何从 php 获取选定的单选按钮值 onclick

转载 作者:行者123 更新时间:2023-11-28 02:01:55 24 4
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我想在 php 中获取所选单选按钮的值。

代码:更新.php

<html>
<head>
<link rel="stylesheet" href="css/common.css" type="text/css">
<link rel="stylesheet" type="text/css" href="css/page.css">
<link href="css/loginmodule.css" rel="stylesheet" type="text/css" />

<script>
function showUser(str) {
if (str == "") {
document.getElementById("txtHint").innerHTML = "";
return;
}

if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
} else {
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
}

xmlhttp.onreadystatechange = function () {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
document.getElementById("txtHint").innerHTML = xmlhttp.responseText;
}
}
xmlhttp.open("GET", "gettheater.php?q=" + str, true);
xmlhttp.send();
}



</script>





</head>
<body>

<h1>Welcome <?php echo $_SESSION['SESS_FIRST_NAME']; ?></h1>
<a href="member-profile.php" class="log">My Profile</a> | <a href="logout.php" class="log">Logout</a>
<p>This is a password protected area only accessible to Admins. </p>

<center>
<div class="pan"><br><br>
<div class="head">Remove Theater From List</div>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST" >


<table>
<tr>
<td>
<table>
<tr>
<td><label for="Theatername">Theater Name</label></td>
<td>
<?php
try {
$dbh = new PDO('mysql:dbname=theaterdb;host=localhost', 'tiger', 'tiger');
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}

$sql = "SELECT theater_name FROM theater;";

$sth = $dbh->prepare($sql);
$sth->execute();

echo "<select name='theater_name' id='course' onchange='showUser(this.value);'>";
echo "<option>----Select Theater----</option>";
while ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
echo "<option value='" . $row['theater_name'] . "'>" . $row['theater_name'] . "</option>";
}
echo "</select>";
?>
</td>
</tr>
</table>
</td>
</tr>
</form>


<tr>
<td>
<form method="POST">
<table>
<tr>
<td><label for="Address">Address</label></td>
<td><div id="txtHint">
</div></td>
</tr>


<tr>
<td></td>
<td><input type="submit" name='Remove From List' value="Remove From List" class="getvalue" onclick="< ? php myfunc() ? >"/></td>
</tr>
</table>

</table>
</form>
<br><br>
</tr>
</td>
<?php
if (isset($_POST['Submit'])) {
echo $_POST['address'];
}
?>
</div>
</center>
</body>
</html>

代码
获取剧院.php

<?php
$q = strtolower(trim($_GET["q"]));

try {
$dbh = new PDO('mysql:dbname=theaterdb;host=localhost', 'tiger', 'tiger');
} catch (PDOException $e) {
echo 'Connection failed: ' . $e->getMessage();
}

$sql = 'SELECT address FROM theater WHERE LOWER(theater_name) = :q';

$sth = $dbh->prepare($sql);
$sth->bindValue(':q', $q);
$sth->execute();

echo "<form name='theater' method='POST' action='update.php'>";
echo "<table border='0' class='tabs'><tr><th>Theater Address</th><th>Select</th></tr>";

while ($row = $sth->fetch(PDO::FETCH_ASSOC)) {
echo "<tr>";
echo "<td class='ad'>" . $row['address'] . "</td>";
echo "<td>";
echo '<input type="radio" name="address" value="43" />';
echo "</td>";
echo "</tr>";
}

echo "</table>";
echo "</form>";
$dbh = null;
?>

单选按钮的 html 位于 gettheater.php 页面中。但我正在运行 update.phpgettheater 页面在 update.php 中打开,但如何获取选定的单选按钮值,我想在 update.php 中获取选定的单选按钮值。

我该怎么做?

最佳答案

检查表单是否已提交,如果已提交,则使用 $_POST[] 访问数据。

参见http://php.net/manual/en/reserved.variables.post.php

您可能想要包含一个提交按钮,这将允许您首先检查表单是否已提交。

echo "<form name='theater' method='POST' action='update.php'>";
echo '<input type="submit" value="Enter" name="submit">';

检查

if (isset($_POST['submit'])) {
//Do something
}

这通常会起作用,如果不起作用,请尝试使用隐藏字段。

关于php - 如何从 php 获取选定的单选按钮值 onclick,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18329472/

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