A função Ds \ Map :: count () pode retornar o número de valores em um mapa.
Sintaxe
public int Ds\Map::count()
A função Ds \ Map :: count () não possui parâmetros.
Exemplo 1
<?php
$map = new \Ds\Map(["1" => "Tutorials", "2" => "Point", "3" => "India"]);
print_r($map);
echo "The number of elements present in a map:";
print_r($map->count());
?>
Exemplo 2
<?php
$map = new \Ds\Map(["1" => "10", "2" => "20", "3" => 30, "4" => 40]);
print_r($map);
echo "The number of elements present in map:";
print_r($map->count());
echo "\n";
$map = new \Ds\Map([1 => "TutorialsPoint", 2 => "to", 3 => "Tutorix"]);
print_r($map);
echo "Number of elements present in map:";
print_r($map->count());
?>