The Ds\Set::union() function is an inbuilt function in PHP which is used to create a new set which contains the union of two sets.
Syntax:
Ds\Set public Ds\Set::union ( Ds\Set $set )
Parameters: This function accepts a single parameter $set which holds the other set of the instance to combine with the current instance.
Return value: It returns a set which contains the union of two sets.
Below programs illustrate the Ds\Set::union() function in PHP:
Program 1:
<?php // Declare a new set $a = new \Ds\Set([2, 3, 6]);
// Declare another new set $b = new \Ds\Set([2, 4, 6, 7]);
// Print the Union of both set echo ( "Union of both set is: \n" );
print_r( $a ->union( $b ));
?> |
Output:
Union of both set is: Ds\Set Object ( [0] => 2 [1] => 3 [2] => 6 [3] => 4 [4] => 7 )
Program 2:
<?php // Declare a new set $a = new \Ds\Set([2, 3, 6, 7, 8]);
// Declare another new set $b = new \Ds\Set([2, 3, 5, 8, 9, 10]);
// Print the union of both set echo ( "Union of both set is: \n" );
var_dump( $a ->union( $b ));
?> |
Output:
Union of both set is: object(Ds\Set)#3 (8) { [0]=> int(2) [1]=> int(3) [2]=> int(6) [3]=> int(7) [4]=> int(8) [5]=> int(5) [6]=> int(9) [7]=> int(10) }
Reference: https://www.php.net/manual/en/ds-set.union.php