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PHP + jquery + ajax implement real-time chat function instance, jqueryajax

Source: Internet
Author: User
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PHP + jquery + ajax implement real-time chat function instance, jqueryajax

This article describes how to implement the instant chat function using PHP + jquery + ajax. Share it with you for your reference. The details are as follows:

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

The index.html page is as follows:
Copy codeThe Code is as follows: <! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<Html xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<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: 'first ',
Type: 'l'
}, Function (data ){
Chat. btn_status. _ true ();
Certificate ('domainmwebtime'0000.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: 'with ',
Type: 'l'
}, Function (data ){
Certificate ('domainmwebtime'0000.html (data. time );
$ ('# Chat textarea'). val (data. chat );
$ ('# Chat textarea'). stop (true, true). animate ({scrollTop: 9999}, 1 );
Chat. socket ();
});
},
Btn_status :{
_ False: function (){
Certificate ('wait chat_btn'wait .html ('waiting'). attr ('Disabled ', true );
},
_ True: function (){
Certificate ('audio chat_btn'audio .html ('speaker '). attr ('Disabled', false );
}
}
}
Chat. init ();
</Script>
</Head>

<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"> speech </button>
</Div>
<Div id = "mwebtime"> </div>
</Body>
</Html>

The data. php page is as follows:
Copy codeThe Code is as follows: <? Php
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 = paitype.'.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 'with ':
$ 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 codeThe Code is 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, "");
$ 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 php programming.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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