Implementation method of php web version chat software-PHP Tutorial-php.cn

Home

Backend Development

PHP Tutorial

Implementation method of php web version chat software

墨辰丷

Jun 01, 2018 pm 03:32 PM

phpaccomplishmethod

This article mainly introduces the implementation code of the PHP web version of the chat software, which can realize anonymous chat. Interested friends can refer to it

The specific content is as follows

1. index. html

<html>
 <head>
  <title>聊天室</title>
  <meta charset="utf-8"/>
  <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="stylesheet">
  <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
  <script src="http://libs.baidu.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
  <link href="./css/style.css" rel="stylesheet"/>
  <script>
   var maxid = 0;
   function showmessage() {
    //创建ajax对象
    var xhr = new XMLHttpRequest();
    //监听
    xhr.onreadystatechange = function () {
     if (xhr.readyState === 4) {
      eval("var info=" + xhr.responseText);
      var text = "";
      for (var i = 0; i < info.length; i++)
      {
       text += "<p class=&#39;alert alert-success&#39;>" +
         "<span class=&#39;name&#39;>" + info[i].send + ":</span>" +
         "<span class=&#39;message&#39;>" + info[i].content + "</span>" +
         "<span>(" + info[i].time + ")</span>" +
         "</p>";
       maxid = info[i].id;
      }
 
      var old = document.getElementById("msg").innerHTML;
      document.getElementById("msg").innerHTML = old + text;
      document.getElementById("msg").scrollTop = document.getElementById("msg").scrollHeight;
     }
    };
    //初始化
    xhr.open("get", "./action.php?maxid=" + maxid);
    //发送
    xhr.send();
   }
 
   $(document).ready(
     function ()
     {
      showmessage()
      self.setInterval("showmessage()", 2000);
     }
   );
   function send() {
    var postData ="content="+document.getElementById(&#39;content&#39;).value;
    var xhr = new XMLHttpRequest();
    xhr.open("POST", "./add.php", true);
    //一定要写头信息不然服务器接收不到
    xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
    xhr.onreadystatechange = function () {
     var XMLHttpReq = xhr;
     if (XMLHttpReq.readyState == 4) {
      if (XMLHttpReq.status == 200) {
       document.getElementById(&#39;content&#39;).value="";
      }
     }
    };
    xhr.send(postData);
   }
  </script>
 </head>
 <body>
 
  <p class="panel panel-default" id="main">
   <!--聊天室名字--> 
   <p class="panel-heading">
    <h3 class="panel-title">
     匿名者聊天室
    </h3>
   </p>
   <!--聊天室名字-->
   <!--聊天室消息框-->
   <p class="panel-body ">
    <p class="well no-bottom ">
     <!--     消息框样式-->
     <!--
     <p class="alert alert-success">成功！很好地完成了提交。</p>
     <p class="alert alert-info">信息！请注意这个信息。</p>
     <p class="alert alert-warning">警告！请不要提交。</p>
     <p class="alert alert-danger">错误！请进行一些更改。</p>
     -->
     <p id="msg" class="showmessage">
     </p>
     <!--聊天室消息框-->
     <p class="well" >
      <form role="form">
       <p class="form-group">
        <label for="name">发送消息</label>
        <textarea class="form-control" id="content" name="content"
           style="resize: none;font-family: Microsoft YaHei;" rows="3" >
        </textarea>
       </p>
       <p style="text-align: right">
        <button type="button" class="btn btn-primary" onclick="send()">
         <span class="glyphicon glyphicon-envelope"></span>
         发送
        </button>
       </p>
      </form>
     </p>
     <!--聊天室发送框-->
    </p>
   </p>
  </p>
 </body>
</html>

2. action.php

<?php
 
$link = mysqli_connect(&#39;localhost&#39;, &#39;root&#39;, &#39;123&#39;, &#39;test&#39;);
mysqli_query($link, &#39;set names utf8&#39;);
$info= array();
header("Content-type: text/html; charset=utf-8");
$id=$_GET[&#39;maxid&#39;];
$data = mysqli_query($link, "select * from talk where id>$id");
while ($array = mysqli_fetch_assoc($data)) {
 $info[] = $array;
};
 
 echo json_encode($info);

3. chat.sql

DROP TABLE IF EXISTS `talk`;
CREATE TABLE `talk` (
 `id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT &#39;id&#39;,
 `send` varchar(10) CHARACTER SET utf8 DEFAULT NULL COMMENT &#39;发送者昵称&#39;,
 `ip` varchar(12) CHARACTER SET utf8 DEFAULT NULL,
 `content` varchar(500) CHARACTER SET utf8 DEFAULT NULL,
 `time` varchar(50) DEFAULT NULL,
 PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=52 DEFAULT CHARSET=utf8;

4. add.php

<?php
 
/**
 * @功能 将表单插入数据库
 */
$content=$_POST[&#39;content&#39;];
print_r($_POST);
$time= date("Y-m-d H:i:s", time(0));
$link = mysqli_connect(&#39;localhost&#39;, &#39;root&#39;, &#39;123&#39;, &#39;test&#39;);
mysqli_query($link, &#39;set names utf8&#39;);
$ip = $_SERVER["REMOTE_ADDR"];
$sql="INSERT INTO talk VALUES(NULL,&#39;匿名者&#39;,&#39;$ip&#39;,&#39;$content&#39;,&#39;$time&#39;)";
$data = mysqli_query($link,$sql);
echo "$content";
if($data)
 echo "1";
 else
  echo "0";

Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.

Related recommendations:

Detailed examples of how to use static variables in PHP

Notes on PHP Sesame Credit Access

thinkPHP’s method of implementing order digital reminder function

The above is the detailed content of Implementation method of php web version chat software. For more information, please follow other related articles on the PHP Chinese website!

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

How can you prevent session fixation attacks?Apr 28, 2025 am 12:25 AM

Effective methods to prevent session fixed attacks include: 1. Regenerate the session ID after the user logs in; 2. Use a secure session ID generation algorithm; 3. Implement the session timeout mechanism; 4. Encrypt session data using HTTPS. These measures can ensure that the application is indestructible when facing session fixed attacks.

How do you implement sessionless authentication?Apr 28, 2025 am 12:24 AM

Implementing session-free authentication can be achieved by using JSONWebTokens (JWT), a token-based authentication system where all necessary information is stored in the token without server-side session storage. 1) Use JWT to generate and verify tokens, 2) Ensure that HTTPS is used to prevent tokens from being intercepted, 3) Securely store tokens on the client side, 4) Verify tokens on the server side to prevent tampering, 5) Implement token revocation mechanisms, such as using short-term access tokens and long-term refresh tokens.

What are some common security risks associated with PHP sessions?Apr 28, 2025 am 12:24 AM

The security risks of PHP sessions mainly include session hijacking, session fixation, session prediction and session poisoning. 1. Session hijacking can be prevented by using HTTPS and protecting cookies. 2. Session fixation can be avoided by regenerating the session ID before the user logs in. 3. Session prediction needs to ensure the randomness and unpredictability of session IDs. 4. Session poisoning can be prevented by verifying and filtering session data.

How do you destroy a PHP session?Apr 28, 2025 am 12:16 AM

To destroy a PHP session, you need to start the session first, then clear the data and destroy the session file. 1. Use session_start() to start the session. 2. Use session_unset() to clear the session data. 3. Finally, use session_destroy() to destroy the session file to ensure data security and resource release.

How can you change the default session save path in PHP?Apr 28, 2025 am 12:12 AM

How to change the default session saving path of PHP? It can be achieved through the following steps: use session_save_path('/var/www/sessions');session_start(); in PHP scripts to set the session saving path. Set session.save_path="/var/www/sessions" in the php.ini file to change the session saving path globally. Use Memcached or Redis to store session data, such as ini_set('session.save_handler','memcached'); ini_set(

How do you modify data stored in a PHP session?Apr 27, 2025 am 12:23 AM

TomodifydatainaPHPsession,startthesessionwithsession_start(),thenuse$_SESSIONtoset,modify,orremovevariables.1)Startthesession.2)Setormodifysessionvariablesusing$_SESSION.3)Removevariableswithunset().4)Clearallvariableswithsession_unset().5)Destroythe

Give an example of storing an array in a PHP session.Apr 27, 2025 am 12:20 AM

Arrays can be stored in PHP sessions. 1. Start the session and use session_start(). 2. Create an array and store it in $_SESSION. 3. Retrieve the array through $_SESSION. 4. Optimize session data to improve performance.

How does garbage collection work for PHP sessions?Apr 27, 2025 am 12:19 AM

PHP session garbage collection is triggered through a probability mechanism to clean up expired session data. 1) Set the trigger probability and session life cycle in the configuration file; 2) You can use cron tasks to optimize high-load applications; 3) You need to balance the garbage collection frequency and performance to avoid data loss.

See all articles