这是一个index.php页面,我有下拉列表 当我从下拉列表中选择值时,我不会在user.php页面中显示该值,我使用javascript onchange
<html>
<head>
<title>Test Selected Dropdown Value</title>
<script type="text/javascript">
function selected_region(){
var vr = document.getElementById("region").value;
alert("Selected region is: "+vr);
}
</script>
</head>
<body>
<form name="selected_region_form" method="POST" action="user.php">
<?php ?>
<select name="region" id="region" onchange="selected_region();">
<label for="region">Odaberite zupaniju:</label>
<option>
<?php
$region_data = all_regions();
while($region = mysqli_fetch_array($region_data)){
$id_region = $region['zupanija_id'];
$name_region = $region['naziv'];
?>
<option value="<?php $id_region; ?>"><?php echo $name_region; ?></option>
<?php
}
?>
</option>
</select>
<input type="submit" name="send" value="Send"/>
</form>
</body>
</table>
</body>
</html>
这是user.php脚本 在td tag-s下,我不会显示index.php中的选定值
<?php
include('connect.php');
include('functions.php');
?>
<html>
<head>
<title>User</title>
</head>
<body>
<h1>User</h1>
<h2>selected region:</h2>
<table border="1">
<tr>
<td> <!-- here i need display a selected region --> <td>
</tr>
</table>
</body>
<a href="index.php.">Back</a>
</html>
functions.php脚本在哪里找到我的查询:
<?php
function confirm_query($result_set){
if(!$result_set){
die("Query data faild!");
}
}
function all_regions(){
global $db_connection;
$query = "SELECT `zupanija_id`,`naziv` ";
$query .= "FROM `zupanija` ";
$query .= "ORDER BY `zupanija_id` ASC";
$zupanije_data = mysqli_query($db_connection, $query);
confirm_query($zupanije_data);
return $zupanije_data;
}
?>
连接脚本:
<?php
$connect_error = 'Connection faild!';
$select_db_error = 'Database not found!';
$db_connection = mysqli_connect('localhost', 'iwa_2013', 'foi2013') or die($connect_error);
$db_select = mysqli_select_db($db_connection, 'iwa_2013_sk_projekt') or die($select_db_error);
//setup charset to utf-8
mysqli_set_charset($db_connection, 'utf8');
?>
答案 0 :(得分:0)
您的表单实际上是通过post方法提交到kreiran_zahtjev.php页面的,因此您点击的元素将通过kreiran_zahtjev.php上的$ _POST变量提供
基本上,如果你想访问被点击的元素,你所要做的就是:
$_POST['zupanija']
此外,你不应该使用PHP的mysql_扩展,它是不安全和不赞成的。你应该使用PDO或mysqli。
答案 1 :(得分:0)
我认为执行此操作的最佳方法是将onchange事件处理程序附加到select元素,然后在每次用户选择某些内容时触发对PHP脚本的AJAX请求。 axlsx_rails docs