How to implement PHP to jump to the page and carry POST data

PHP is a programming language widely used in website development, and page jumps and carrying POST data are common requirements in website development. This article will introduce how to implement PHP page jump and carry POST data, including specific code examples.

In PHP, page jumps are generally implemented through the header function. If you need to carry POST data during the jump process, you can complete it through the following steps:

First, create a page containing a form, where the user fills in the information and clicks the submit button. Specify the PHP file that processes the form data in the action attribute of the form, and set the method attribute of the form to the POST method to send the data to the target page in POST mode.

<form action="process_form.php" method="post">
    <input type="text" name="username" placeholder="请输入用户名">
    <input type="password" name="password" placeholder="请输入密码">
    <input type="submit" value="提交">
</form>

Then, in the PHP file that processes the form data, after receiving the POST data and processing the business logic, use the header function to jump to the page. In order to carry POST data, the processed POST data needs to be spliced ​​into the URL of the target page in the form of URL parameters.

<?php
$username = $_POST['username'];
$password = $_POST['password'];

// 处理业务逻辑
// ...

// 页面跳转并携带POST数据
$post_data = http_build_query(['username' => $username, 'password' => $password]);
$url = 'target_page.php?' . $post_data;
header("Location: $url");
exit;
?>

Next, in the target page target_page.php, you can get the POST data carried through the $_GET super global variable. This completes the implementation of page jump and carrying POST data.

<?php
$username = $_GET['username'];
$password = $_GET['password'];

// 使用携带的POST数据进行后续处理
// ...
?>

It should be noted that since the header function must be called before the page is output, there cannot be any output (including HTML tags, spaces, newlines, etc.) before using the header to jump to the page, otherwise it will cause The header function call failed.

To sum up, through the above steps, the function of jumping the PHP page and carrying POST data can be realized. In actual development, it can be expanded and optimized according to specific needs to meet more complex business scenarios.

The above is the detailed content of How to implement PHP to jump to the page and carry POST data. For more information, please follow other related articles on the PHP Chinese website!