delete cookie using foreach

i can delete all cookie using

foreach($_COOKIE as $c => $d){
setcookie($c,"",time()-3600);

}

but i can not delete following cookie i created previously.

(second one is automatically created )


127_0_0_1 : 1250981744
PHPSESSID : 4eabf513497f6762077d2150b1ae7bf5

Are you confusing cookies with PHP sessions?
Sessions are automatically deleted when the user closes their browser (session).

to delete sessions you need to add this line of code


<?php

unset($_SESSION);
session_destroy();

?>