The Ds\Set::xor() function is an inbuilt function in PHP which is used to create a new set which contains the value either in the first set or second set but not both.
Syntax:
Ds\Set public Ds\Set::xor ( Ds\Set $set )
Parameters: This function accepts a single parameter $set which is used to hold the set of values.
Return Value: It is used to return a set which contains the xor of the current set with another set.
Below programs illustrate the Ds\Set::xor() function in PHP:
Program 1:
<?php    // Declare a new set $a = new \Ds\Set([1, 3, 5]);    // Declare a new set $b = new \Ds\Set([2, 3, 6]);    // Print the xor of both set echo("xor of both set is: \n");    print_r($a->xor($b));   ?>  | 
xor of both set is: 
Ds\Set Object
(
    [0] => 1
    [1] => 5
    [2] => 2
    [3] => 6
)
Program 2:
<?php    // Declare a new set $a = new \Ds\Set([2, 3, 6, 7, 8]);    // Declare a new set $b = new \Ds\Set([2, 3, 5, 8, 9, 10]);    // Print the xor of both set echo("xor of both set is: \n");    var_dump($a->xor($b));   ?>  | 
xor of both set is: 
object(Ds\Set)#3 (5) {
  [0]=>
  int(6)
  [1]=>
  int(7)
  [2]=>
  int(5)
  [3]=>
  int(9)
  [4]=>
  int(10)
}
Reference: https://www.php.net/manual/en/ds-set.xor.php
