$data = array("zoo", "orange", "car", "lemon", "apple");
usort($data, function($a, $b) { return strcmp($a, $b); });
var_dump($data); # data is sorted alphabetically
What happens if you do this:
$data = array("zoo", "orange", "car", "lemon", "apple");
$rev = 1;
usort($data, function($a, $b) { return $rev?strcmp($a, $b):!strcmp($a, $b); });
var_dump($data); # data is sorted alphabetically
This works in Javascript (probably Ruby too), but quite hard to make work in PHP because $rev is in different scope.
Moreover, would it mean that this:
$f = function($a, $b) { return $rev?strcmp($a, $b):!strcmp($a, $b); }
would work too? Keeping right value of $rev?
--
Stanislav Malyshev, Zend Products Engineer
stas@zend.com http://www.zend.com/