php结合ajax实现赞、顶、踩功能实例_PHP
Ajax
php应用越来越多,也越来越广泛,为了增加网站的丰富多彩,从而出现了很多新的技术。ajax是现代网站中不能缺少的一项技术,他可以异步刷新数据,而实现很多效果,比如刷新验证码,微博中的赞功能,都是运用这个。
本次赞功能的效果图:
主页文件(index.php):
复制代码 代码如下:
header("Content-type:text/html;charset=utf-8");
include "finger_ajax.php";
$sql = "select * from finger_ajax";
$res = mysql_query($sql,$link);
while($row = mysql_fetch_array($res)){
echo "
".$row['title']." \r\n赞一下(".$row['finger'].")
}
?>
处理ajax请求及配置信息文件(finger_ajax.php):
复制代码 代码如下:
/**"赞" 功能 响应ajax请求*/
//配置
$dbHost = "localhost";
$dbUser = "root";
$dbPass = "dddddd";
$dbName = "test";
$dbCharset = "utf8";
$link = mysql_connect($dbHost,$dbUser,$dbPass) or die(mysql_error());
mysql_query("set names ".$dbCharset);
mysql_select_db($dbName);
// End
//接受对应的id
if(!empty($_POST['id'])){
$id = $_POST['id'];
//“赞”加1
$sql = "update finger_ajax set finger=finger+1 where id=$id;";
if(mysql_query($sql,$link)){
echo "ok";
}else{
echo "failed";
}
}
?>
js文件(finger_ajax.js):
复制代码 代码如下:
//赞 js
function finger(topic_id){
$.post("finger_ajax.php", { "id": topic_id },
function(data){
if(data=="ok"){
alert("感谢您的支持!");
}else{
alert("对不起,失败了!");
}
}, "text");
//获取当前“赞”的次数并加1
var finger = parseInt($(".finger"+topic_id).html())+1;
//更新“赞”的次数
$(".finger"+topic_id).html(finger);
}
数据库代码(finger_ajax.sql):
复制代码 代码如下:
DROP TABLE IF EXISTS `finger_ajax`;
CREATE TABLE `finger_ajax` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`title` varchar(50) NOT NULL DEFAULT '',
`finger` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of finger_ajax
-- ----------------------------
INSERT INTO `finger_ajax` VALUES ('1', '今天天气还不错哦!去做点什么好呢?', '10');
INSERT INTO `finger_ajax` VALUES ('2', '欢迎来到 www.bitsCN.com,国庆将至,祝大家国庆节快乐!!', '3');

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

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

CakePHP is an open-source framework for PHP. It is intended to make developing, deploying and maintaining applications much easier. CakePHP is based on a MVC-like architecture that is both powerful and easy to grasp. Models, Views, and Controllers gu

To work on file upload we are going to use the form helper. Here, is an example for file upload.

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

CakePHP is an open source MVC framework. It makes developing, deploying and maintaining applications much easier. CakePHP has a number of libraries to reduce the overload of most common tasks.

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,
