重复提交数据我们在应用中经常会碰到了,今天我给各位介绍利用session来防止用户不小心重复提交数据的一个例子.
原理非常的简单,就是用session在表单页面记录下,然后提交页面判断,如果相等则视为成功,并清空session.
例子,代码如下:
<?php //开启session session_start(); //如果有提交标识 if (isset($_GET['action']) && $_GET['action'] === 'save') { //如果有session且跟传过来的值一样 www.phprm.com 才算提交 if (isset($_SESSION['__open_auth']) && isset($_POST['auth']) && $_SESSION['__open_auth'] == $_POST['auth']) { print_r($_POST); $_SESSION['__open_auth'] = null; //清空 } else { //走起 header("location: post.php"); } exit(); } //授权 $auth = $_SESSION['__open_auth'] = time(); ?> <!doctype html> <html> <head> <meta charset="UTF-8"> <title>post</title> </head> <body> <form action="post.php?action=save" method="post"> <ul> <li> <input type="hidden" name="auth" value="1395454119"> <input type="text" name="userName"> </li> <li> <input type="password" name="userpass"> </li> <li> <input type="submit" value="走起"> </li> <li> 1395454119 </li> </ul> </form> </body> </html>
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Assassin's Creed Shadows: Seashell Riddle Solution
1 weeks agoByDDD
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Where to find the Crane Control Keycard in Atomfall
1 weeks agoByDDD

Hot Tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool

SublimeText3 Chinese version
Chinese version, very easy to use

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft