This article is an example of how Php+jquery+ajax implements instant chat. Share to everyone for your reference. Specifically as follows:
This is a simple use of jquery and PHP to do a chat room source code, we are here to use Ajax to read the database and to refresh, the following direct reference to the source, the example codes are as follows:
<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; Charset=utf-8 "/>
<title> Untitled Document </title>
<script src= "Js/jquery-1.9.1.min.js" ></script>
<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: ' I ',
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 (' Wait '). attr (' disabled ', true);
},
_true:function () {
$ (' #chat_btn '). html (' speak '). attr (' disabled ', false);
}
}
}
Chat.init ();
</script>
<body>
<div id= "Chat" >
<textarea wrap= "Physical" style= "line-height:20px;font-size:12px;height:100px;width:200px;" ></textarea>
<br/>
<input id= "My_chat" type= "text"/>
<button id= "chat_btn" disabled= "disabled" > Speaking </button>
</div>
<div id= "Mwebtime" ></div>
</body>
The data.php page is as follows:
Copy Code code as follows:
<?php
Header ("Expires:mon, June June 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 ' a ':
$chat = file_get_contents ($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
}
}
?>
The send.php page is as follows:
Copy Code code as follows:
<?php
$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
}
}
?>
I hope this article will help you with your PHP program design.
