php filter desing pattern

filter.php

<?php


$persons = [
    [
        'name' => 'ali',
        'gender' => 'man',
        'age' => 18
    ],
    [
        'name' => 'deniz',
        'gender' => 'woman',
        'age' => 25
    ],
    [
        'name' => 'ahmet',
        'gender' => 'man',
        'age' => 14
    ],

];


interface  Filterable
{
    public function filter(array $persons): array;
}


class ManFilter implements Filterable
{

    /**
     * @param array $persons
     * @return array
     */
    public function filter(array $persons): array
    {
        return array_values(
            array_filter(
                $persons,
                static fn($person) => $person['gender'] === 'man'
            )
        );
    }
}

class AgeFilter implements Filterable
{

    public function __construct(private readonly int $age)
    {
    }

    /**
     * @param array $persons
     * @return array
     */
    public function filter(array $persons): array
    {
        return array_values(
            array_filter($persons, fn($person) => $person['age'] > $this->age)
        );
    }
}

class FilterOperation implements Filterable
{

    /**
     * @var Filterable[] $filters
     */
    private array $filters = [];

    public function add(Filterable $filterable): self
    {
        $this->filters[] = $filterable;
        return $this;
    }

    /**
     * @param array $persons
     * @return array
     */
    public function filter(array $persons): array
    {
        foreach ($this->filters as $filter) {

            $persons = $filter->filter($persons);
        }
        return $persons;

    }
}


$filter = new FilterOperation();

$filter
    ->add(new AgeFilter(17))
    ->add(new ManFilter());

$filter->filter($persons); //['name'=>'ali,'gender'=>'man','age'=>18]