[SOLVED] session unset

[asmith]

is there any php function to unset all the variabes together? (and maybe all but 1 or 2 )

 

i can unset a variable i had set  with :

 

unset($_SESSION[aaa]);

 

 

 

i want to know if i have for example 20 variables stored in session like above , how can i unset all without having to code 20 times "unset()" .

 

and if i want to unset 18 of them and keep 2 , what should i do ?

 

 

[jitesh]

session_unset

(PHP 4, PHP 5)

 

session_unset --  Free all session variables

Description

void session_unset ( void )

 

 

The session_unset() function frees all session variables currently registered.

 

 

<?php
session_unset();
?>

[asmith]

thanks for the tip ,

i read the php.net session unset too !

but i didn't get how to keep some session variables while unsetting others ?

 

in previous example how can i keep $_SESSION[aaa]  and unset all of the other session variabels ?  what about keeping more than one ?

[rajivgonsalves]

I wrote a user function for you since I do not think there is any php function to suit your needs

 

function fnUserSessionUnset($arrKeepVars=array())
{
foreach ($_SESSION as $strKey => $strValue)
{
	if (!in_array($strKey,$arrKeepVars))
	{
		unset($_SESSION[$strKey]);
	}
}
}

 

so if you like to keep 'aaa' and 'bbb' just use it like this

 

fnUserSessionUnset(array('aaa','bbb'));

 

hope its helpful

[asmith]

yea it will work  !

i understand what you did there !

i don't know what to say ! maybe i should thank you in a different way !