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PHP+ajax implements a news message system without refreshing (with source code)_PHP tutorial

WBOYOriginal: 2016-07-13 10:50:42944browse

Ajax has been very simple and easy to implement since jquery was introduced. Now I will introduce the implementation process of a refresh-free news message system based on jquery ajax+php mysql. I hope this article can help you.

The most concise and easy-to-understand ajax message system without refreshing, the source code omits the process of accepting data verification. Readers can expand it according to their own needs.

Core source code:

1. Configuration file: config.php

The code is as follows

Copy code

代码如下

复制代码

//数据库配置信息(用户名,密码，数据库名，表前缀等)

$cfg_dbhost = "localhost";

$cfg_dbuser = "root";

$cfg_dbpwd = "root";

$cfg_dbname = "ajaxdemo1";

$cfg_dbprefix = "";

$link = mysql_connect($cfg_dbhost,$cfg_dbuser,$cfg_dbpwd);

mysql_select_db($cfg_dbname);

mysql_query("set names utf8");

代码如下

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header("Content-type:text/html;charset=utf-8");

include "config.php";

//post接收数据,只是演示效果,这里就省去验证了

$name = $_POST['name'];

$content = $_POST['content'];

$sql = "insert into test (name,content) values ('{$name}','{$content}');";

$res = mysql_query($sql,$link);

if($res){

echo '{"name": "'.$name.'","content": "'.$content.'","status": "1"}';

}

//Database configuration information (user name, password, database name, table prefix, etc.) $cfg_dbhost = "localhost"; $cfg_dbuser = "root"; $cfg_dbpwd = "root"; $cfg_dbname = "ajaxdemo1"; $cfg_dbprefix = ""; $link = mysql_connect($cfg_dbhost,$cfg_dbuser,$cfg_dbpwd); mysql_select_db($cfg_dbname); mysql_query("set names utf8"); ?> 2. Process the request: deal.php

The code is as follows

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<🎜> header("Content-type:text/html;charset=utf-8");<🎜> <🎜> include "config.php";<🎜> <🎜> //Post receives data, just to demonstrate the effect, no verification is needed here <🎜> <🎜> $name = $_POST['name'];<🎜> <🎜> $content = $_POST['content'];<🎜> <🎜> <🎜> <🎜><🎜> $sql = "insert into test (name,content) values ('{$name}','{$content}');";<🎜> <🎜> $res = mysql_query($sql,$link);<🎜> <🎜> if($res){<🎜> <🎜> echo '{"name": "'.$name.'","content": "'.$content.'","status": "1"}';<🎜> <🎜>}<🎜> <🎜>?>

3.首页代码：index.php

代码如下

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无刷新

include "config.php";

$sql = "select * from test;";

$res = mysql_query($sql,$link);

while($row=mysql_fetch_array($res)){

echo "

".$row['name']." 发表了：".$row['content']."

}

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代码如下	复制代码
DROP TABLE IF EXISTS `test`; CREATE TABLE `test` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(64) NOT NULL, `content` text NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=utf8;

无刷新

".$row['name']." 发表了：".$row['content']."

"; } ?>

数据库文件

代码如下

复制代码

DROP TABLE IF EXISTS `test`;
CREATE TABLE `test` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`name` varchar(64) NOT NULL,
`content` text NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 源码下载地址:php+ajax实现无刷新的新闻留言系统下载

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