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Collection (filter, map, sort ... in one)

PHP Libs PHP

Collection.php Raw #

<?php

/* https://betterprogramming.pub/how-to-make-your-php-code-beautiful-with-chainable-methods-83d8832b1b16 */

class Collection
{
    private $array;
    public function __construct($array)
    {
        $this->array = $array;
    }
    public function filter($callback)
    {
        $this->array = array_filter($this->array, $callback);
        return $this;
    }
    public function map($callback)
    {
        $this->array = array_map($callback, $this->array);
        return $this;
    }
    public function sort($callback)
    {
        usort($this->array, $callback);
        return $this;
    }
    public function execute()
    {
        return $this->array;
    }
}


$characters = new Collection([
    'Maggie Simpson',
    'Edna Krabappel',
    'Marge Simpson',
    'Lisa Simpson',
    'Moe Szyslak',
    'Waylon Smithers',
    'Homer Simpson',
    'Bart Simpson'
]);
$simpsons = $characters
    ->filter(function ($character) {
        return preg_match('/^.+\sSimpson$/', $character);
    })
    ->map(function ($character) {
        return str_replace(' Simpson', '', $character);
    })
    ->sort(function ($a, $b) {
        return strcasecmp($a, $b);
    })
    ->execute();
var_dump($simpsons); // ['Bart', 'Homer', 'Lisa', 'Maggie', 'Marge']