setcookie problems

I've got the following snippet:

setcookie("applicatieid", $array['applicatie_id'], time()+86400, "/", "", 0);

Now i want to let this cookie expire when the session ends (browser close)... BUT i cannot find a way how to do this.
Beacause when i delete time()+86400, or set it on 0 or true/false it does nothing or give's me an error message:
"Warning: setcookie() expects parameter 3 to be long, string given in /home/www/ on line 20" where line 20 is:
"setcookie("applicatieid", $array['applicatie_id'], "", "/", "", 0);"

Anybody any idea's?
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setcookie("applicatieid", $array['applicatie_id'], 0, "/", "", 0);

do not use "". See :
You may also replace an argument with an empty string ("") in order to skip that argument. Because the expire  argument is integer, it cannot be skipped with an empty string, use a zero (0) instead.

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php-webdesignAuthor Commented:
see... i was thinking to damn hard :-) thank you (think because i am working on this since 9.00 AM (my time GMT+1))
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