如何在表单提交后在同一个html页面上回显？
[英]How to echo on same html page after form submit?
问题描述
When the form is submitted, my page is redirected to the PHP and the echo is displayed. 
提交表单后，我的页面将重定向到PHP并显示回显。 How can I display the echo without being redirected to the PHP page? 如何在不重定向到PHP页面的情况下显示回声？ So the echo should be displayed in the html page (where the html form is located). 所以回声应该显示在html页面中（html表单所在的位置）。
<form method="post" action="../form.php">
<input type="submit" name="1" value="YES" />
<input type="submit" name="1" value="NO" />
</form>
- -
<?php
$answer = $_POST['1'];
if ($answer == "YES") {
echo 'Good!!!';
}
else {
echo 'Try Again!';
}
?>
5 个解决方案
解决方案1
4 2013-01-17 18:48:13
You can't do it on the same page - at least not without asynchronous client-server communication techniques such as AJAX. 您无法在同一页面上执行此操作 - 至少在没有异步客户端 - 服务器通信技术（如AJAX）的情况下也是如此。 Otherwise, you can use the following: 否则，您可以使用以下内容：
<form action="<?php echo $_SERVER['PHP_SELF']; ? method=....>"
as your form opening tag, then put the PHP processing code at the top of the document, like this: 作为表单开始标记，然后将PHP处理代码放在文档的顶部，如下所示：
<?php
if(isset($_POST['form_field_name'])){
//process your data here
?>
HTML in case of Form filled in goes here
<?php
}else{
?>
HTML in case of Form not filled in goes here
<?php
}
?>
HTML in any case goes here
This way you can change the layout of your page depending on whether the form was filled in or not. 这样，您可以根据表单是否填写来更改页面布局。 the $_SERVER['PHP_SELF'] contains the reference to the currently requested page, and therefore is always set to the correct page even if it is renamed. $ _SERVER ['PHP_SELF']包含对当前请求页面的引用，因此即使重命名也始终设置为正确的页面。 This can save you time when bug-tracking. 这可以节省您跟踪错误的时间。
解决方案2
4 已采纳 2013-01-17 18:52:37
I guess you can use a combination of <iframe> and javascript to get the results. 我想你可以使用<iframe>和javascript的组合来获得结果。
<form method="post" action="submit.php" target="myIframe" >
<input type="submit" name="1" value="YES" />
<input type="submit" name="1" value="NO" />
</form>
<iframe name="myIframe">
</iframe>
解决方案3
2 2013-01-17 18:41:44
<?php
if(isset($_POST['1'])){
echo ($_POST['1'] == 'YES') ? 'Good!!!' : 'Try Again!';
}
?>
<!-- your HTML goes here -->
You can combine HTML and PHP on the same page. 您可以在同一页面上组合HTML和PHP。
解决方案4
0 2016-04-08 11:34:53
<html> <body> <form method="post" action=""> <input type="text" maxlength="30" name="nm"> <input type="email" maxlength="30" name="em"><br> <input type="checkbox" name="chkbox1" value="male">Male <input type="checkbox" name="chkbox2" value="male">Male <input type="checkbox" name="chkbox3" value="male">Male <input type="checkbox" name="chkbox4" value="male">Male <input type="checkbox" name="chkbox5" value="male">Male <input type="Submit" name="submit"> </form> </body> </html> <?php if(isset($_POST['submit'])) { echo "Welcome :".$_POST['nm']."<br>"; echo "Your email Address is: ".$_POST['em']."<br>"; } $count=0; if(isset($_POST['chkbox1'])) $count++; if(isset($_POST['chkbox2'])) $count++; if(isset($_POST['chkbox3'])) $count++; if(isset($_POST['chkbox4'])) $count++; if(isset($_POST['chkbox5'])) $count++; echo" Number of checkboxes ticked are:".$count; ?>
解决方案5
0 2017-11-24 02:20:56
You can set the action to the same page for example: 您可以将操作设置为同一页面，例如：
If I am working on a file called index.php 如果我正在处理名为index.php的文件
that will be my form: 这将是我的形式：
<form action="index.php" method="post">
<input type="text" name="Example" placeholder="Enter Text">
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