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

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

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Release： 2016-07-13 10:10:58

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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:

Untitled Document

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

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。