Three ways to implement page jumps in PHP

Preface

There are many ways to implement page jumps in PHP. Common methods include the header() function and HTML elements that come with PHP.<meta>Tags and JavaScript

The difference table of the three is as follows:

Jump method	advantage	shortcoming	Applicable scenarios
PHP header()	Server-side jump, suitable for handling redirects, supports HTTP status code	Must be called before output, no HTML output	Used for redirection of PHP backend, processing login and other permission jumps
HTML `<meta>`	Simple and easy to use, suitable for automatic jump of static pages	The jump time is inflexible and the user behavior cannot be controlled	Timed jump, suitable for simple automatic jump scenarios
JavaScript	Strong flexibility, supports client operation	Need to support JS on the client, it may be disabled	Suitable for front-end interactions, such as countdown or jump after user operations

The basic choices are as follows:

PHP header(): Suitable for backend page redirection, often used for jump after user authentication or background logic judgment
HTML <meta>: Suitable for simple page redirection, often used for automatic redirection after static pages or announcement prompts
JavaScript: Suitable for front-end page redirection, with higher flexibility, suitable for scenarios where users need to interact

1. PHP Jump

The header() function is used to send original HTTP header information to the browser, which can realize page redirection.

When using it, you must make sure that nothing is output before calling the header() function (i.e., no HTML or echo output), otherwise the header information will not be sent

&lt;?php
// PHP page jumpheader('Location: /weixin_47872288'); // Jump to the specified URL// orheader('location:'); 
exit; // End the current script to prevent subsequent code execution?&gt;

The points to note are as follows:

The header() function must be called before any HTML content or blank output
You can use HTTP status codes to specify jump types, such as header('Location: URL', true, 301) specified as permanent redirect

2. HTML jump

In HTML, you can use<meta>Tags realize automatic page jump

Usually placed in the tag, by settinghttp-equiv="refresh"Attributes and content attributes to realize the timed page jump

The basic demo is as follows:

&lt;!DOCTYPE html&gt;
&lt;html lang="zh-CN"&gt;
&lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;meta http-equiv="refresh" content="3;url="&gt;
    &lt;title&gt;Page jump&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;p&gt;The page will be in 3 Automatically jump to the new one after seconds URL。&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;

This method is suitable for automatic page jump, often used for prompts or delay jumps, and the delay time can be adjusted according to needs

3. JavaScript jump

JavaScript can use objects to realize page jump

It is an object of the browser. By modifying its properties, the browser can jump to the specified URL

&lt;!DOCTYPE html&gt;
&lt;html lang="zh-CN"&gt;
&lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;title&gt;JavaScript Page jump&lt;/title&gt;
    &lt;script type="text/javascript"&gt;
        setTimeout(function() {
             = ""; // Jump to the specified URL        }, 3000); // Delay 3 seconds    &lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;p&gt;The page will be in 3 Automatically jump in seconds。&lt;/p&gt;
&lt;/body&gt;
&lt;/html&gt;

Jump can be used in client scripts and supports more flexible control, such as jump condition judgment, etc.