PHP ajax implements a news message system without refreshing, ajax message system

PHP ajax implements a news message system without refreshing, ajax message system_PHP tutorial

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Release： 2016-07-12 09:06:21

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php ajax implements a non-refresh news message system, ajax message system

This article introduces a non-refresh news message system, the most concise and easy to understand ajax non-refresh message System, the process of accepting data verification is omitted in the source code. You can expand it according to your own needs. Let’s get into the topic.

Core source code:

1. Configuration file: config.php, the code is as follows:

<&#63;php 
 //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"); 
&#63;>

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2. Process the request: deal.php, the code is as follows:

<&#63;php 
 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"}'; 
 } 
&#63;>

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3. Home page code: index.php, the code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>无刷新</title> 
<link href="css/css.css" type="text/css" rel="stylesheet" /> 
<style type="text/css"> 
body{color:#555;font-size:14px;padding:0;margin:0;} 
#form { background:#dedede; padding:10px 20px; width:300px;} 
#show{ background:#f6f6f6;padding:10px 20px; width:300px;} 
#show p{ margin:6px; font-size:13px; line-height:22px; border-bottom:1px dashed #cdcdcd;} 
</style> 
<script type="text/javascript" src="jquery-1.7.2.min.js"></script> 
<script type="text/javascript"> 
$(function(){ 
 $("#sub").click(function(){ 
 //只是说明原理,然后这里省去了验证文本框内容的步骤，直接发送ajax请求 
 $.post("deal.php",{name : $("#name").val(), content : $("#content").val()}, function(data){ 
  if(data.status){ 
   var str = "<p><strong>"+data.name+"</strong> 发表了："+data.content+"</p>"; 
   $("#show").prepend(str); //在前面追加 
  }else{ 
   alert("评论失败"); 
  } 
  }, 'json'); 
 });   
}); 
</script> 
</head> 
<body> 
<div id="form"> 
 <form action="deal.php" method="get" id="suggest_form"> 
 用户名：<input type="text" name="name" id="name" /><br/> 
 内  容：<textarea name="content" id="content"></textarea>   
 <input type="button" value="发布" id="sub" /> 
 </form> 
</div> 
<div id="show"> 
<&#63;php 
 include "config.php"; 
 $sql = "select * from test;"; 
 $res = mysql_query($sql,$link); 
 while($row=mysql_fetch_array($res)){ 
 echo "<p><strong>".$row['name']."</strong> 发表了：".$row['content']."</p>"; 
 } 
&#63;> 
</div> 
</body> 
</html>

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Database file, the code is as follows:

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;

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The above is the php ajax implementation of the news message system without refreshing that I shared with you. I hope it will be helpful to everyone's learning.