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<?php
/*
 ***************************************************************************
 *   Copyright (C) 2007-2008 by Sixdegrees                                 *
 *   [email protected]                                               *
 *   "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>
 
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