PHP 通过重定向传递数据
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PHP Pass Data with Redirect
提问by Billy Martin
PHP Redirect with Post Data
PHP 重定向与发布数据
Hi,
你好，
I am a newbie PHP programmer and trying to code a small blog.
我是一个新手 PHP 程序员，正在尝试编写一个小博客。
I will explain what I am trying to do.
我将解释我正在尝试做什么。
- page1.php: Has a table of all posts in the blog
- page2.php: This page has a form where you can add a Post
- page1.php：有一个包含博客中所有帖子的表格
- page2.php：此页面有一个表单，您可以在其中添加帖子
Page 2 posts to itself and then processes the data, if it successful then uses header() to redirect back to page1 which shows the table.
第 2 页发布到自身，然后处理数据，如果成功则使用 header() 重定向回显示表的 page1。
Now what I want to do is to be able to have a small message on page 1 above the table saying your blog post has been successfully submitted but I'm not sure how I can pass data back to page 1 after the form processing.
现在我想要做的是能够在表格上方的第 1 页上显示一条小消息，说您的博客文章已成功提交，但我不确定如何在表单处理后将数据传递回第 1 页。
回答by Tim
Set it as a $_SESSIONvalue.
将其设置为$_SESSION值。
in page2:
在第 2 页：
$_SESSION['message'] = "Post successfully posted.";
in page1:
在第 1 页：
if(isset($_SESSION['message'])){
echo $_SESSION['message']; // display the message
unset($_SESSION['message']); // clear the value so that it doesn't display again
}
Make sure you have session_start()at the top of both scripts.
确保您session_start()在两个脚本的顶部都有。
EDIT: Missed )in if(isset($_SESSION['message']){
编辑：错过了)在if(isset($_SESSION['message']){
回答by Motive
You could also just append a variable to the header location and then call it from the page.
您也可以将一个变量附加到标题位置，然后从页面中调用它。
header('Location: http://example.com?message=Success');
Then wherever you want the message to appear, just do:
然后，无论您希望消息出现在何处，只需执行以下操作：
if (isset($_GET['message'])) {
echo $_GET['message'];
}
回答by Chris Hutchinson
A classic way to solve this problem is with cookies or sessions; PHP has a built-in session library that assists with the creation and management of sessions:
解决此问题的经典方法是使用 cookie 或会话；PHP 有一个内置的会话库，可以帮助创建和管理会话：
http://www.php.net/manual/en/book.session.php
http://www.php.net/manual/en/book.session.php
Here is a concise example:
这是一个简洁的例子：
Page 1
第 1 页
session_start();
if (isset($_SESSION['message'])) {
echo '<div>' . $_SESSION['message'] . '</div>';
unset($_SESSION['message']);
}
Page 2
第2页
session_start();
// Process POST data
$_SESSION['message'] = 'Hello World';
// Redirect to Page 1
