# Ds\Map::slice

(PECL ds >= 1.0.0)

Ds\Map::slice Returns a subset of the map defined by a starting index and length

### Descrierea

public Ds\Map::slice ( int `\$index` , int `\$length` = ? ) : Ds\Map

Returns a subset of the map defined by a starting `index` and `length`.

### Parametri

`index`

The index at which the range starts.

If positive, the range will start at that index in the map. If negative, the range will start that far from the end.

`length`

If a length is given and is positive, the resulting map will have up to that many pairs in it. If a length is given and is negative, the range will stop that many pairs from the end. If the length results in an overflow, only pairs up to the end of the map will be included. If a length is not provided, the resulting map will contain all pairs between the index and the end of the map.

### Valorile întoarse

A subset of the map defined by a starting index and length.

### Exemple

Example #1 Ds\Map::slice() example

``` <?php\$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3, "d" => 4, "e" => 5]);// Slice from 2 onwardsprint_r(\$map->slice(2)->toArray());// Slice from 1, for a length of 3print_r(\$map->slice(1, 3)->toArray());// Slice from 1 onwardsprint_r(\$map->slice(1)->toArray());// Slice from 2 from the end onwardsprint_r(\$map->slice(-2)->toArray());// Slice from 1 to 1 from the endprint_r(\$map->slice(1, -1)->toArray());?> ```

Exemplul de mai sus va afișa ceva similar cu:

```Array
(
[c] => 3
[d] => 4
[e] => 5
)
Array
(
[b] => 2
[c] => 3
[d] => 4
)
Array
(
[b] => 2
[c] => 3
[d] => 4
[e] => 5
)
Array
(
[d] => 4
[e] => 5
)
Array
(
[b] => 2
[c] => 3
[d] => 4
)
```