(PECL ds >= 1.0.0)
Ds\Set::diff — Creates a new set using values that aren't in another set
Creates a new set using values that aren't in another set.
A \ B = {x ∈ A | x ∉ B}
setSet containing the values to exclude.
A new set containing all values that were not in the other set.
Example #1 Ds\Set::diff() example
<?php$a = new \Ds\Set([1, 2, 3]);$b = new \Ds\Set([3, 4, 5]);var_dump($a->diff($b));?>The above example will output something similar to:
object(Ds\Set)#3 (2) {
[0]=>
int(1)
[1]=>
int(2)
}