Gastenboek class

|| class.guestbook.php ||
<?
/*********************************************************
* Software: Guestbook	                                                               *
* Version:  0.1                                                                              *
* Date:     2005-07-26                                                                   *
* Author:   Jeroen Vercoulen                                                          *
* License:  Freeware									 *
* PHP:		4.3.4									     *
*                                                                                                 *
* You may use and modify this software as you wish.                       *
**********************************************************/

class guestbook
{
	var $fd;
	var $content;
	var $post;

	function open_guestbook($filename , $type)
	{
		$this->fd = fopen($filename , $type , 1);
	}

	function fill_array()
	{
		if ($this->fd)
		{
			while (!feof($this->fd))
			{
				$this->content[] = fgets($this->fd, 4096);
			}
		}
	}

	function sort_content()
	{
		rsort($this->content);
	}

	function view_guestbook()
	{
		$h="<table>";
		for ( $i = 0 ; $i < sizeof($this->content) ; $i++ )
		{
			$message = explode (" || " , $this->content[$i]);
			$h.="<tr><td>";
			$h.="<table>";
			$h.="<tr><td>";
			$h.="On ".date("d-m-Y H:i:s", $message[0])." <a href='mailto:".$message[2]."'>".$message[1]."</a> posted:";
			$h.="</td></tr>";
			$h.= "<tr><td>";
			$h.=$message[4];
			$h.="</td></tr>";
			$h.="</table>";
			$h.="</td></tr>";
		}
		$h.="</table>";
		return $h;
	}

	function check_message($message)
	{
		if (stristr($message," || "))
		{
			return false;
		}
		else
		{
			return true;
		}

	}

	function post_message($name, $email, $message)
	{
		$date = mktime();
		$ip = $_SERVER['REMOTE_ADDR'];
		$this->post = "\n".$date ." || ". $name ." || ". $email ." || ". $ip ." || ". $message."";
		$fwritten = fwrite($this->fd, $this->post);
	}

	function close_guestbook()
	{
		fclose($this->fd);
	}
}
?>

|| index.php ||

<?

include('./class.guestbook.php');

$guestbook= new guestbook;
$guestbook->open_guestbook("guestbook.txt" , "r+");
$guestbook->fill_array();
$guestbook->sort_content();

if (isset($post_messages))
{
	if ((isset($message)) && ($guestbook->check_message($message)))
	{
		$guestbook->post_message($name, $email, $message);
                header("location: destination_url.php");
	}
	else
	{
		$h.="<form name=post action=".$_SERVER['PHP_SELF']." method=post>";
		$h.="<table>";
		if ((isset($message)) && (!$guestbook->check_message($message)))
		{
			$h.="<tr><td>";
			$h.="Er is een ongeldige bericht ingevoerd!!!";
			$h.="</tr></td>";
		}
		$h.="<tr><td>";
		$h.="</tr></td>";
		$h.="Naam";
		$h.="<tr><td>";
		$h.="<input type=text name=name value=".$name.">";
		$h.="</tr></td>";
		$h.="<tr><td>";
		$h.="E-mail";
		$h.="</tr></td>";
		$h.="<tr><td>";
		$h.="<input type=text name=email value=".$email.">";
		$h.="</tr></td>";
		$h.="<tr><td>";
		$h.="Bericht";
		$h.="</tr></td>";
		$h.="<tr><td>";
		$h.="<textarea name=message cols=40 rows=10>".$message."</textarea>";
		$h.="</tr></td>";
		$h.="<tr><td>";
		$h.="<input type=submit name=post_messages value=post>";
		$h.="</tr></td>";
		$h.="</table>";
		$h.="</form>";

	}
}
else
{
	$h.="<form name=post action=".$_SERVER['PHP_SELF']." method=post>";
	$h.="<table>";
	$h.="<tr><td>";
	$h.="<input type=submit name=post_messages value=post>";
	$h.="</tr></td>";
	$h.="</table>";
	$h.="</form>";
	$h.=$guestbook->view_guestbook();
}
$guestbook->close_guestbook();


echo $h;

?>