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File: examples/example3.php

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  Classes of Cesar D. Rodas  >  PHP Ajax  >  examples/example3.php  >  Download  
File: examples/example3.php
Role: Example script
Content type: text/plain
Description: Example 3
Class: PHP Ajax
Manage AJAX applications with only PHP code
Author: By
Last change: * Upgrading to version 1.1
Date: 12 years ago
Size: 4,653 bytes
 

 

Contents

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<?php
/*
***************************************************************************
* Copyright (C) 2007-2008 by Sixdegrees *
* cesar@sixdegrees.com.br *
* "Working with freedom" *
* http://www.sixdegrees.com.br *
* *
* Permission is hereby granted, free of charge, to any person obtaining *
* a copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to *
* the following conditions: *
* *
* The above copyright notice and this permission notice shall be *
* included in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, *
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR *
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, *
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR *
* OTHER DEALINGS IN THE SOFTWARE. *
***************************************************************************
*/

error_reporting(E_ALL);
require(
"../phpajax/phpajax.php");
require(
"showsource.php");

/**
 * Example 2
 * This is a chat example.
 *
 * @author Cesar D. Rodas
 * @package PHP-Ajax-Examples
 */
class chat_put extends phpajax {
    var
$hotkeys=array("ctrl-m","alt-y");
    var
$inputs=array("text","usr_id");

    function
loading() {
       
aprint('loading', 'Sending...');
       
ashow('loading');
       
ahide('send');
    }

    function
main() {
        global
$mysql;
       
       
$a = & $this->text;

       
# Add what I've chat to the chat-text.
        # the third paramete is false, because we don't
        # want to loose all the previous content.
       
aprint('chat-text',"me> $a\n",false);
       
mysql_query("insert into chat values('','".$this->usr_id."','".$_SERVER['REMOTE_ADDR']."','".addslashes($a)."')",$mysql);
       
#set the input box empty
       
aprint('text','');
       
ashow('send');
       
js("getObject('chat-text').scrollTop = getObject('chat-text').scrollHeight;");
    }
}

class
chatupdater extends phpajax {
    var
$inputs=array("last","usr_id");
   
    function
main() {
        global
$mysql;
       
       
$last = $this->last;

       
$sql="select * from chat where userid != '".$this->usr_id."' && postid > $last order by postid desc limit 10";
       
$r = mysql_query($sql,$mysql);
       
$i=0;
        while (
$row = mysql_fetch_array($r)){
            if (
$i++ == 0) {
               
#last id
               
$last = $row[0];
               
#add a javascript code
               
js("getObject('chat-text').scrollTop = getObject('chat-text').scrollHeight;") ;
            }
           
aprint('chat-text',$row[2]."> ".$row[3]."\n",false);

        }
       
mysql_free_result($r);
       
mysql_close($mysql);
       
aprint('last',$last);
    }
}

$mysql = mysql_connect("localhost","root","");
mysql_select_db("chat",$mysql);

/* Initiliaze php ajax*/
phpajax::init();

?>
<html>
<head>
    <title>Example of how to implement PHP Ajax</title>
<?php phpajax_js("../phpajax/");?>
<script>
    setInterval('chatupdater()',3000);
</script>
</head>
<body>

<textarea id="chat-text" readonly=1 cols=50 rows=10></textarea><br/>
<input type="text" id="text"><input type="button" id ="send" value="Send" onclick="chat_put()"><span id='loading' style="visibility:hidden;">
Cargando...
</span>
<input type=hidden name="last" id = "last" value=0>
<input type=hidden name="usr_id" id = "usr_id" value="<?=md5(time())?>">

<hr>
<input type="submit" value="show source" onclick="showsource('example3.php')"><br />
<div id="source"></div>
</body>
</html>