Viewing file:  chat.php (1.42 KB) -rw-rw-rw-
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<?php
// reference the file containing the Chat class
require_once("chat.class.php");
// retrieve the operation to be performed
$mode = $_POST['mode'];
// default the last id to 0
$id = 0;
// create a new Chat instance
$chat = new Chat();
// if the operation is SendAndRetrieve
if($mode == 'SendAndRetrieveNew')
{
// retrieve the action parameters used to add a new message
$name = $_POST['name'];
$message = $_POST['message'];
$color = $_POST['color'];
$id = $_POST['id'];
// check if we have valid values
if ($name != '' && $message != '' && $color != '')
{
// post the message to the database
$chat->postMessage($name, $message, $color);
}
}
// if the operation is DeleteAndRetrieve
elseif($mode == 'DeleteAndRetrieveNew')
{
// delete all existing messages
$chat->deleteMessages();
}
// if the operation is Retrieve
elseif($mode == 'RetrieveNew')
{
// get the id of the last message retrieved by the client
$id = $_POST['id'];
}
// Clear the output
if(ob_get_length()) ob_clean();
// Headers are sent to prevent browsers from caching
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('Pragma: no-cache');
header('Content-Type: text/xml');
// retrieve new messages from the server
echo $chat->retrieveNewMessages($id);
?>
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