PHP | Ds\Deque map() Function

PHP Ds\Map pairs() Function

Last Updated : 21 Aug, 2019

The Ds\Map::pairs() function in PHP is used to get all of the pairs from the specified Map instance. This function returns a sequence of type Ds\Sequence containing all of the pairs from the Map instance. Syntax:

Ds\Sequence public Ds\Map::pairs ( void )

Parameter: This function does not accepts any parameter. Return value: It returns a sequence of type Ds\Sequence containing all of the pairs from the specified Map instance. Below programs illustrate the Ds\Map::pairs() function: Program 1:

php

<?php
// PHP program to illustrate pairs() function

$map = new \Ds\Map([1 => "Geeks", 2 => "for", 
                                3 => "Geeks"]);

print_r($map->pairs());

?>

Output:

Ds\Vector Object
(
    [0] => Ds\Pair Object
        (
            [key] => 1
            [value] => Geeks
        )

    [1] => Ds\Pair Object
        (
            [key] => 2
            [value] => for
        )

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

)

Program 2:

php

<?php
// PHP program to illustrate pairs() function

$map = new \Ds\Map(["first" => "Geeks", "second" => "for", 
                                "third" => "Geeks"]);

print_r($map->pairs());

?>

Output:

Ds\Vector Object
(
    [0] => Ds\Pair Object
        (
            [key] => first
            [value] => Geeks
        )

    [1] => Ds\Pair Object
        (
            [key] => second
            [value] => for
        )

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

)

Reference: http://php.net/manual/en/ds-map.pairs.php

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