(PECL ds >= 1.0.0)
Ds\Map::sort — Sorts the map in-place by value
Sorts the map in-place by value, using an optional comparator
function.
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.
Returning non-integer values from the comparison
function, such as float, will result in an internal cast to
int 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.
No devuelve ningún valor.
Ejemplo #1 Ds\Map::sort() example
<?php
$map = new \Ds\Map(["a" => 2, "b" => 3, "c" => 1]);
$map->sort();
print_r($map);
?>
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]);
$map->sort(function($a, $b) {
return $b <=> $a;
});
print_r($map);
?>
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 ) )