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Real time message push function implemented by PHP [based on anti ajax push]

  • 2021-09-12 00:44:08
  • OfStack

This paper describes the real-time message push function realized by PHP. Share it for your reference, as follows:

Entry file index. html 


<!DOCTYPE HTML>
<html>
<head>
  <title> Inverse ajax Push </title>
  <style>
    .send{color:#555;text-align: left;}
    .require{color:blue;text-align: right;}
    .content_box{text-align: center;margin: 20px;
          border: 1px solid #ddd;padding: 20px;}
  </style>
  <script src="http://code.jQuery.com/jquery-1.11.2.min.js"></script>
</head>
<body>
  <div class="content_box" id="content_box_title" style="border: none;"> Message box </div>
  <div class="content_box" id="content_box">
  </div>
  <div style="width: 450px;margin: 0 auto;">
    <select id="username" style="font-size: 20px;">
      <option value="1" selected="selected">1</option>
      <option value="2">2</option>
    </select>
    <input type="text" style="font-size: 20px;" value="" id="send_text">
    <button id="btn_send" style="font-size: 20px;"> Send </button>
    <button id="btn_link" style="font-size: 20px"> Connect </button>
  </div>
  <div class="error_tip" id="error_tip" style="color: red;">
  </div>
  <script>
    $(function(){
      // Send a message 
      $('#btn_send').click(function(){
        var send_text = $('#send_text').val();
        if(send_text.length <= 0){
          $('#error_tip').html(' You cannot enter a null value ');
        }else{
          send(send_text);
        }
      });
      // Press Enter to send a message 
      $('#send_text').on('keyup',function(e){
        if(e.keyCode == 13){
          $('#btn_send').trigger('click');
        }
      });
      // Establish a communication link 
      $('#btn_link').click(function(){
        connect();
        var _this = $(this);
        _this.attr('disabled',true);
        _this.html(' Connected ');
      });
    });
    // Establish communication connection function 
    function connect(){
      $('#content_box_title').html($('#username').val()+' Message window of ');
      $.ajax({
        data:{'user':$('#username').val()},
        url:'ajaxPush.PHP',
        type:'get',
        timeout:0,
        dataType:'json',
        success:function(data){
          $('#content_box').append('<div class="require">'+data.msg+'</div>');
          connect();
        }
      });
    }
    // Send message function 
    function send(massege){
      var user =$('#username').val();
      $.getJSON('write.php',{'msg':massege,'user':user},function(data){
        if(data.sf){
          $('#content_box').append('<div class="send">'+massege+'</div>');
          $('#send_text').val('');
        }else{
          $('#error_tip').html(' Input save error! ');
        }
      });
    }
  </script>
</body>
</html>

ajax processing input write. php 


<?php
/**
 * Created by TXM.
 * Time: 2015/4/18 13:13
 * function:
 */
$filename = dirname(__FILE__).'/data.txt';
$isread_file = dirname(__FILE__).'/isread.txt';
$user = dirname(__FILE__).'/user.txt';
// Write message, message unread, who sent the message 
file_put_contents($filename,$_GET['msg']);
file_put_contents($isread_file,'0');
file_put_contents($user,$_GET['user']);
echo json_encode(array('sf'=>true));

Long polling push ajaxPush. php 


<?php
/**
 * Created by TXM.
 * Time: 2015/4/18 13:12
 * function:
 */
$filename = dirname(__FILE__).'/data.txt';
$isread_file = dirname(__FILE__).'/isread.txt';
$userfile = dirname(__FILE__).'/user.txt';
$get_user = $_GET['user'] == '1'?'2':'1';
$msg='';
while(1){
  $msg = file_get_contents($filename);
  $isread = file_get_contents($isread_file);
  $user = file_get_contents($userfile);
  // Is the message sent by the other party, set the message read and exit the loop. 
  if($isread == '0' && $get_user == $user){
    file_put_contents($isread_file,'1');
    break;
  }
  sleep(1);
}
echo json_encode(array('msg'=>$msg));

For more readers interested in PHP related contents, please check the topics on this site: "Summary of PHP+ajax Skills and Applications", "Summary of PHP Network Programming Skills", "Introduction to PHP Basic Grammar", "Introduction to php Object-Oriented Programming", "Summary of php String (string) Usage", "Introduction to php+mysql Database Operation" and "Summary of php Common Database Operation Skills"

I hope this article is helpful to everyone's PHP programming.

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