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PHP Ds / Set union () function

Syntax:
DsSet public DsSet::union (DsSet $​​set)
Parameters: This function takes one parameter, $set,which contains another set of instances to merge with the current instance.Return Value:returns a set containing combining two sets.The following programs illustrate the Ds / Set::union()function in PHP:Program 1:  
// Declare a new set $a = new DsSet ([2, 3, 6]);  
// Declaring another new set $b = new DsSet ([2, 4, 6, 7]);  
// display the union of both sets echo ( "Union of both set is:" ); print_r ( $a -> union ( $b )) ;  
?>
Exit:
Union of both set is: DsSet Object ([0] = > 2 [1] = > 3 [2] = > 6 [3] = > 4 [4] = > 7)
Program 2:  
// Declare a new set $a = new DsSet ([2, 3, 6, 7, 8]);  
// Declaring another new set $b = new DsSet ([2, 3, 5, 8, 9, 10]);  
// Print the merge of both sets echo ( "Union of both set is:" ); var_dump ( $a -> union ( $b )) ;  
?>
Exit:
Union of both set is: object (DsSet) # 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)}
Link: https: / /www.php.net/manual/en/ds-set.union.php

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