PHP | Ds\Set union() Function Last Updated : 22 Aug, 2019 Comments Improve Suggest changes Like Article Like Report 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 <?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 <?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 Create Quiz Comment R R_Raj Follow 0 Improve R R_Raj Follow 0 Improve Article Tags : Web Technologies PHP PHP-function PHP-ds_set Explore BasicsPHP Syntax4 min readPHP Variables5 min readPHP | Functions6 min readPHP Loops4 min readArrayPHP Arrays5 min readPHP Associative Arrays4 min readMultidimensional arrays in PHP5 min readSorting Arrays in PHP4 min readOOPs & InterfacesPHP Classes2 min readPHP | Constructors and Destructors5 min readPHP Access Modifiers4 min readMultiple Inheritance in PHP4 min readMySQL DatabasePHP | MySQL Database Introduction4 min readPHP Database connection2 min readPHP | MySQL ( Creating Database )3 min readPHP | MySQL ( Creating Table )3 min readPHP AdvancePHP Superglobals6 min readPHP | Regular Expressions12 min readPHP Form Handling4 min readPHP File Handling4 min readPHP | Uploading File3 min readPHP Cookies9 min readPHP | Sessions7 min read Like