Ds\Map::sorted

(PECL ds >= 1.0.0)

Ds\Map::sortedReturns a copy, sorted by value

Descripción

public Ds\Map::sorted ([ callable $comparator ] ) : Ds\Map

Returns a copy, sorted by value using an optional comparator function.

Parámetros

comparator

La función de comparación debe devolver un entero menor, igual o mayor que cero si el primer argumento se considera que sea respectivamente menor, igual o mayor que el segundo. Observe que antes de PHP 7.0.0 este entero debía estar en el rango de -2147483648 a 2147483647.

callback ( mixed $a, mixed $b ) : int
Precaución

Returning non-integer values from the comparison function, such as float, will result in an internal cast to integer of the callback's return value. So values such as 0.99 and 0.1 will both be cast to an integer value of 0, which will compare such values as equal.

Valores devueltos

Returns a copy of the map, sorted by value.

Ejemplos

Ejemplo #1 Ds\Map::sort() example

<?php
$map 
= new \Ds\Map(["a" => 2"b" => 3"c" => 1]);

print_r($map->sorted());
?>

El resultado del ejemplo sería algo similar a:

Ds\Map Object
(
    [0] => Ds\Pair Object
        (
            [key] => c
            [value] => 1
        )

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

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

)

Ejemplo #2 Ds\Map::sort() example using a comparator

<?php
$map 
= new \Ds\Map(["a" => 2"b" => 3"c" => 1]);

// Reverse
$sorted $map->sorted(function($a$b) {
    return 
$b <=> $a;
});

print_r($sorted);
?>

El resultado del ejemplo sería algo similar a:

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

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

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

)
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