note 56569 added to function.isset

In case it helps someone, here's a table to compare different Variable tests/comparisons http://www.deformedweb.co.uk/php_variable_tests.php ---- Manual Page -- http://www.php.net/manual/en/function.isset.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+56569 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes&reason=non-english Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+56569&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+56569&report=yes Search -- http://master.php.net/manage/user-notes.php