Map an array of options to a binary bitfield as a string or integer, and back again.
If you have three values in your bitmask (for ex: a, b, c) then the following code snippets show how to extract values form the bitmask.
$bf = new Bitfield(array('a', 'b', 'c'));
// for just a
$bf->setValue(1);
$options = $bf->getOptionsOn();
// for just b
$bf->setValue(2);
$options = $bf->getOptionsOn();
// for just c
$bf->setValue(4);
$options = $bf->getOptionsOn();If you have a bitmask, a set of values and want to find which are on and which are off you could use the following approach.
$values = array('a', 'b', 'c');
$bf = new Bitfield($values);
$bf->setValue(1);
foreach($values as $val) {
if ($bf->isOn($val)) {
// do something
} else {
// do something else
}
}