Php Programming Code Examples
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Mini Chat
Mini Chat
<?php
// Contains db constants
require "cst.inc";
/*
CREATE TABLE MINICHAT (
NB tinyint(4) NOT NULL auto_increment,
LOGIN varchar(20) NOT NULL default '',
MESSAGE varchar(255) NOT NULL default '',
ITSTIME varchar(10) NOT NULL default '',
) TYPE=MyISAM;
*/
// Number of messages to print
define( "_NB_MSGS_", 10 );
// Connect
mysql_connect( $db_hostname, $db_username, $db_password );
mysql_selectdb( $db_database );
// Add message into minichat
function addMessage( $login, $message ) {
@setcookie( "minichatlogin", strip_tags( $login ) );
$login = $_COOKIE['minichatlogin'] ? $_COOKIE['minichatlogin'] :
mysql_escape_string( strip_tags( $login ) );
$message = mysql_escape_string( strip_tags( $message, '<a><b><i><u>') );
mysql_query( "INSERT INTO MINICHAT ( NB, ITSTIME, LOGIN, MESSAGE ) VALUES ( "
._NB_MSGS_.", '".
time()."', '".$login."','".$message."' )" );
mysql_query( "UPDATE MINICHAT SET NB=NB-1" );
mysql_query( "DELETE FROM MINICHAT WHERE NB < 1" );
}
// Returns messages
function getMessages() {
$rs = mysql_query( "SELECT * FROM MINICHAT ORDER BY NB" );
$ret = Array();
while ( $msg = mysql_fetch_array( $rs )) {
$ret[] = date( 'h:m', $msg['ITSTIME'] )." ".$msg['LOGIN']." >".$msg['MESSAGE'];
}
return $ret;
}
// Prints mini chat
function miniChat() {
$msgs = getMessages();
@reset( $msgs );
echo '<form method="post">
<table border="0" bgcolor="#000000" cellpadding="1">
<tr><td>
<table border="0" bgcolor="#ffffff" cellpadding="1">
';
while ( list(,$msg) = each( $msgs ))
echo "<tr><td>$msg</td></tr>";
if ( !$_COOKIE['minichatlogin'] ) {
if ( !$_POST['login'] )
echo '<tr><td>Login:<input type="text" name="login" size="6"></td></tr>';
else
echo '<input type="hidden" name="login" value="'.$_POST['login'].'">';
}
echo '
<tr><td><input type="text" name="msg" size="10"></td></tr>
<tr><td align="center"><input type="submit" value="Send"></td></tr>
</table></tr></td></table></form>';
}
// Message Posted ?
if ( isset( $_POST['msg'] )) {
addMessage( $_POST['login'], $_POST['msg'] );
}
?>
<html>
<head>
<title>Mini Chat Sample</title>
</head>
<body>
<center>
<?php miniChat(); ?>
<hr>
</center>
</body>
</html>
