PHP | Ds\Set merge() Function

The Ds\Set::merge() function is an inbuilt function in PHP which returns a set after adding all given values to the set.

Syntax:

Ds\Set public Ds\Set::merge ( mixed $values ) 

Parameters: This function accepts single parameter $values which holds the elements.

Return Value: This function returns the set adding all the elements.

Below programs illustrate the Ds\Set::merge() function in PHP:

Program 1:

<?php

// Create new set
$set = new \Ds\Set([12, 15, 18, 20]);

// Merge the set element and display it
var_dump($set->merge([1, 2, 3]));

// Display the set element
var_dump($set)
?>

Output:

object(Ds\Set)#2 (7) {
  [0]=>
  int(12)
  [1]=>
  int(15)
  [2]=>
  int(18)
  [3]=>
  int(20)
  [4]=>
  int(1)
  [5]=>
  int(2)
  [6]=>
  int(3)
}
object(Ds\Set)#1 (4) {
  [0]=>
  int(12)
  [1]=>
  int(15)
  [2]=>
  int(18)
  [3]=>
  int(20)
}

Program 2:

<?php

// Create new set
$set = new \Ds\Set([12, 15, 18, 20]);

// Merge the set element and display it
var_dump($set->merge(["G", "E", "E", "k", "S"]));

?>

Output:

object(Ds\Set)#2 (8) {
  [0]=>
  int(12)
  [1]=>
  int(15)
  [2]=>
  int(18)
  [3]=>
  int(20)
  [4]=>
  string(1) "G"
  [5]=>
  string(1) "E"
  [6]=>
  string(1) "k"
  [7]=>
  string(1) "S"
}

Reference: https://www.php.net/manual/en/ds-set.merge.php