PHP | DsSet union() Function

PHP | Ds\Map union() Function

Last Updated : 29 Apr, 2019

The Ds\Map::union() function is an inbuilt function in PHP which is used to create a new map which contains the union of two maps. Syntax:

Ds\Map Ds\Map::union( $map )

Parameters: This function accepts single parameter $map which is used to hold the other map of the instance to combine with the current instance. Return Value: It returns a map which contains the union of two maps. Below programs illustrate the Ds\Map::union() function in PHP: Program 1:

php

<?php 

// Declare a new map
$a = new \Ds\Map(["a" => 1, "b" => 3, "c" => 5]); 

// Declare another new map
$b = new \Ds\Map(["a" => 2, "c" => 3, "d" => 6]); 

// Print the Union of two map
echo("Union of both map is: \n"); 

print_r($a->union($b));

?>

Output:

Union of both map is: 
Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => a
            [value] => 2
        )

    [1] => Ds\Pair Object
        (
            [key] => b
            [value] => 3
        )

    [2] => Ds\Pair Object
        (
            [key] => c
            [value] => 3
        )

    [3] => Ds\Pair Object
        (
            [key] => d
            [value] => 6
        )

)

Program 2:

php

<?php 

// Declare a new map
$a = new \Ds\Map(["a" => "Geeks", "b" => "for", "c" => "Geeks"]); 

// Declare another new map
$b = new \Ds\Map(["b" => "Computer", "e" => "Science", "f" => "Portal"]); 

// Print the union of two map
echo("Union of both map is: \n"); 

print_r($a->union($b));

?>

Output:

Union of both map is: 
Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => a
            [value] => Geeks
        )

    [1] => Ds\Pair Object
        (
            [key] => b
            [value] => Computer
        )

    [2] => Ds\Pair Object
        (
            [key] => c
            [value] => Geeks
        )

    [3] => Ds\Pair Object
        (
            [key] => e
            [value] => Science
        )

    [4] => Ds\Pair Object
        (
            [key] => f
            [value] => Portal
        )

)

Reference: https://www.php.net/manual/en/ds-map.union.php

PHP | DsSet union() Function

R

R_Raj

Improve

Article Tags :

Similar Reads

PHP | DsMap union() Function

The Ds\Map::union() function is an inbuilt function in PHP which is used to create a new map which contains the union of two maps. Syntax: Ds\Map Ds\Map::union( $map ) Parameters: This function accepts single parameter $map which is used to hold the other map of the instance to combine with the curr

PHP | DsSet union() Function

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 t

PHP | DsDeque map() Function

The Ds\Deque::map() function is an inbuilt function in PHP which is used to return the Deque with each element modified on the basis of operation performed as per the callback function. Syntax: public Ds\Deque::map( $callback ) : Ds\Deque Parameters: This function accepts single parameter $callback

PHP | DsVector map() Function

The Ds\Vector::map() function is an inbuilt function in PHP which is used to return the result of a callback after applying to each value in the vector. Syntax: Ds\Vector public Ds\Vector::map( $callback ) Parameters: This function accepts single parameter $callback which is to be applied to each ve

PHP | DsSequence map() Function

The Ds\Sequence::map() function is an inbuilt function in PHP which returns the result after applying callback function to each value. Syntax: Ds\Sequence abstract public Ds\Sequence::map( $callback ) Parameter: This function accepts single parameter $callback. The callback apply on each value of se

PHP | DsMap xor() Function

The Ds\Map::xor() function is an inbuilt function in PHP which is used to create a new map which contains the value either in the first map or second map but not both. Syntax: Ds\Map public Ds\Map::xor ( Ds\Map $map ) Parameter: This parameter holds the other map of values. Return value: It is used

PHP | DsSet xor() Function

The Ds\Set::xor() function is an inbuilt function in PHP which is used to create a new set which contains the value either in the first set or second set but not both. Syntax: Ds\Set public Ds\Set::xor ( Ds\Set $set ) Parameters: This function accepts a single parameter $set which is used to hold th

PHP DsMap sum() Function

The Ds\Map::sum() function of PHP is used to get the sum of all of the values present in the Map instance. Syntax: number public Ds\Map::sum ( void ) Parameters: This function does not accepts any parameter. Return value: This function returns the sum of all of the values present in the Map instance

PHP DsSet sum() Function

The Ds\Set::sum() function of Ds\Set class in PHP is an inbuilt function which is used to find the sum of all of the elements present in a Set. Syntax: number public Ds\Set::sum ( void ) Parameter: This function does not accepts any parameter. Return Value: This function returns the sum of the value

PHP | DsDeque unshift() Function

The Ds\Deque::unshift() function is an inbuilt function in PHP which is used to add the value in front of the deque. Syntax: void Ds\Deque::unshift( $values ) Parameters: This function accepts single parameter $values which holds the values to add in the front of the deque. Return Value: This functi