PHP+jquery+ajax implements instant chat function example, jqueryajax_PHP tutorial

PHP+jquery+ajax implements instant chat function example, jqueryajax

The example in this article describes how PHP+jquery+ajax implements the instant chat function. Share it with everyone for your reference. The details are as follows:

This is a simple source code for a chat room using jquery and php. Here we use ajax to read the database regularly and refresh it. Below is the source code directly. The example code is as follows:

The

index.html page is as follows:

Copy code The code is as follows:

<script> <br> var chat = { <br> init:function(){ <br> chat.first(); <br> $('#chat_btn').unbind('click').click(function(){ <br> chat.send(); <br> }); <br> $('#my_chat').keyup(function(){ <br> If(event.keyCode == 13){ <br> Chat.send(); <br> } <br> });<br> }, <br> first:function(){ <br> $.getJSON('data.php',{ <br> action:'first', <br> Type:'l' <br> },function(data){ <br> chat.btn_status._true(); <br> $('#mwebtime').html(data.time); <br> $('#chat textarea').val(data.chat); <br> $('#chat textarea').stop(true,true).animate({scrollTop:9999}, 1); <br> chat.socket(); <br> }); <br> }, <br> send:function(){ <br> chat.btn_status._false(); <br> $.getJSON('send.php',{ <br> txt:$('#my_chat').val(), <br> Type:'l' <br> },function(data){ <br> If(data.status==200){ <br> Chat.btn_status._false(); <br> $('#my_chat').val(''); <br> setTimeout(function(){ <br> Chat.btn_status._true(); <br> },2000); <br> } <br> }); <br> }, <br> socket:function(){ <br> $.getJSON('data.php',{ <br> action:'while', <br> Type:'l' <br> },function(data){ <br> $('#mwebtime').html(data.time); <br> $('#chat textarea').val(data.chat); <br> $('#chat textarea').stop(true,true).animate({scrollTop:9999}, 1); <br> chat.socket(); <br> }); <br> }, <br> btn_status:{ <br> _false:function(){ <br> $('#chat_btn').html('waiting').attr('disabled',true); <br> }, <br> _true:function(){ <br> $('#chat_btn').html('speak').attr('disabled',false); <br> } <br> } <br> } <br> chat.init(); <br> </script>

Speak

The data.php page is as follows:

Copy code The code is as follows:

header("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); 
header("Last-Modified: ".gmdate("D, d M Y H:i:s")." GMT"); 
header("Cache-Control: no-cache, must-revalidate"); 
header("Pramga: no-cache");
set_time_limit(0);
$get = $_GET['action'];
$type = $_GET['type'];
$file = $type.'.txt';
if(isset($get) && isset($type) && file_exists($file)){
 switch($get){
  case 'first':
   $chat = file_get_contents($file);
   $json=array(
    'status' => 200,
    'time' => gmdate("s"),
    'chat' => $chat,
   );
   echo json_encode($json);
   break;
  case 'while':
   $oldsize = filesize($file);
   $newsize = filesize($file);
   while(true){
    if($oldsize!=$newsize){
     $chat = file_get_contents($file);
     $json=array(
      'status' => 200,
      'time' => gmdate("s"),
      'chat' => $chat,
     );
     echo json_encode($json);
     exit;
    }
    clearstatcache();
    $newsize = filesize($file);
    usleep(10000);
   }
   break;
 }
}
?>

send.php页面如下：

复制代码 代码如下:

$json = array();
$txt = isset($_GET['txt'])?$_GET['txt']:'';
$type = isset($_GET['type'])?$_GET['type']:'';
if($txt!=''){
 $file = $type.".txt";
 if(file_exists($file)){
  $fp = fopen($file,"a");
  $str = "rn".'Admin：'.$txt;
  //$str = $txt."n"//linux;
  fwrite($fp, $str);
  fclose($fp);
  $json['status']=200;
  echo json_encode($json);
  exit;
 }
}
?>

希望本文所述对大家的php程序设计有所帮助。

http://www.bkjia.com/PHPjc/932074.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/932074.htmlTechArticlePHP+jquery+ajax实现即时聊天功能实例，jqueryajax 本文实例讲述了PHP+jquery+ajax实现即时聊天功能的方法。分享给大家供大家参考。具体如下： 这...