PHP | Ds\Set union() Function
Last Updated :
22 Aug, 2019
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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:
php
php
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:
Program 2:
Union of both set is:
Ds\Set Object
(
[0] => 2
[1] => 3
[2] => 6
[3] => 4
[4] => 7
)
<?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:
Reference: https://www.php.net/manual/en/ds-set.union.php
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)
}
