Session destruction issue

[lemist]

I have read the other help messages on destroying sessions. They aren't working for me. I have an oo script that i'm developing, using sessions for the first time. Here's my login script (a new user(); calls the user() function, which calls the login() function, which calls the authenticate() function. Here it is:

function user()
	{
		if(user::login($user, $pass))
		{
			echo session_id();

		echo "<br /><a href=\"".$PHP_SELF."\">click</a>";
		echo "<br /><a href=\"?x=user&y=logout\">logout</a>";
	}
	else
	{
		echo "<form action=\"".$PHP_SELF."?x=user&y=login\" method=\"POST\">\n";
		echo "<input type=\"input\" name=\"user\" /><br />\n";
		echo "<input type=\"password\" name=\"pass\" /><br />\n";
		echo "<input type=\"submit\" /><br />\n";
		echo "</form>";
	}
}

function login($user, $pass)
	{
		if(user::authenticate($user, $pass))
		{
			session_start();
			session_register(sessionData);
			$link = i42::db_connect();
			$result = mysql_query("SELECT ".user::tableData("level")." FROM ".user::table()." WHERE ".user::tableData("user")."='$user'");
			$this->sessionData["user"] = "$user";
			while($row = mysql_fetch_array($result))
			{
				$this->sessionData["level"] = $row["user::tableData('level')"];
				$this->sessionData["name"] = $row["user::tableData('realname')"];
			}
			mysql_close($link);
			return true;
		}
		else
			return false;
	}


function authenticate($user, $pass)
{
	$link = i42::db_connect();
	$result = mysql_query("SELECT ".user::tableData("user").", ".user::tableData("password")." FROM ".user::table()." WHERE ".user::tableData("user")."='".$user."' AND ".user::tableData("password")."='".$pass."'");
	mysql_close($link);
	if($result)
		return true;
	else
		return false;
}

Now, following the advice given on the other help threads, the following logout code (in the user class) should work:

function logout()
	{
		session_start();
		session_unset();
		$_SESSION = array();
		session_destroy();

	echo "<br /><br />Thank you for using Index42!";
}

It doesn't destroy the session. Can anyone explain why?

[Dr_Freak2]

First off,what PHP version do you use?If 4.3.1,I think you have better off using this method to register and unset the session correctly.

To register a session:
session_start();
$_SESSION["name"]="Dr.Freak";

To unset a session:
unset($_SESSION["name"]);

There are little difference since PHP 4.3.1 or newer version.I think you would be okay if you use the method above.Because I have same problem before... :mad: