PHP code example of markhj / collection

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

markhj / collection example snippets

use Markhj\Collection\Collection;

$collection = new Collection;
$collection->push('John', 'Jane');

$collection->map(function($item) {
	return $item . ' Doe';
});

var_dump($collection->all()); // John Doe, Jane Doe

public function push(...$objects): Collection;
public function set($key, $object): Collection;
public function add(Collection $collection): Collection;
public function get($key);
public function keyExists($key): bool;
public function all(): array;
public function count(?callable $filter = null): int;
public function empty(): Collection;
public function reverse(): Collection;
public function keys(): Collection;
public function toJson(): string;
public function indexOf($item): ?int;
public function remove(...$keys): Collection;
public function first();
public function last();
public function clone(): Collection;
public function append(Collection $collection): Collection;
public function prepend(Collection $collection): Collection;
public function crop(int $start, int $size): Collection;
public function limit(int $limit): Collection;
public function has($item): bool;
public function hasAllOf(...$items): bool;
public function hasAnyOf(...$items): bool;
public function map(callable $handler): Collection;
public function filter(callable $handler): Collection;
public function forEach(callable $handler): Collection;
public function retrieve(callable $filter): Collection;
public function merge(Collection $target): Collection;
public function mergePreserving(Collection $target): Collection;
public function append(Collection $collection): Collection;
public function prepend(Collection $collection): Collection;
public function before($key, Collection $collection): Collection;
public function after($key, Collection $collection): Collection;
public function isAssociative(): bool;
public function isGraceful(): bool;

$collection = new AssociativeCollection;
$collection->add('order', $order);
$collection->add('customer', $customer);

// ...

$collection->get('customer'); // Returns the customer

foreach ($collection as $key => $value) {
	// ...
}

$collection = (new Collection)
	->push(1, 2, 3)
	->map(function($item, $key) {
		return $item * 2;
	});

// 2, 4, 6

$sum = 0;
$collection = (new Collection)
	->push(1, 2, 3)
	->forEach(function($item, $key) use(&$sum) {
		return $sum += $item;
	});

// $sum is 6

$collection = (new Collection)
	->push(8, 2, 5)
	->sort(function($a, $b) {
		return $a > $b;
	});

// 2, 5, 8

$collection = (new Collection)
	->push(8, 2, 5)
	->filter(function($a) {
		return $a != 2;
	});

// 8, 5

$evenNumbers = $collection->retrieve(function($a) {
	return $a % 2 == 0;
});

$collection = (new Collection)->push(1, 2, 3);
$collection->has(1); // true
$collection->has(8); // false

$collection = (new Collection)->push(1, 2, 3);
$collection->hasAnyOf(2, 8); // true
$collection->hasAnyOf(8, 11); // false

$collection = (new Collection)->push(1, 2, 3);
$collection->hasAllOf(2, 3); // true
$collection->hasAllOf(2, 8); // false

$a = (new Collection)->push(1, 2, 3);
$b = (new Collection)->push(1, 10, 20, 40);

$a->merge($b); // 1, 10, 20, 40

$a = (new Collection)->push(1, 2, 3);
$b = (new Collection)->push(1, 10, 20, 40);

$a->mergePreserving($b); // 1, 2, 3, 40

public function validate($item): bool

public function validate($item): bool
{
	return is_string($item);
}

public function validate($item): bool
{
	return get_class($item) == '...';
}

class MyCustomDateCollection extends Collection
{
	public function earliest()
	{
		// ...
	}

	public function latest()
	{
		// ...
	}
}

class PaymentMethodCollection extends Collection
{
	public function hasExpiredCreditCard(): bool
	{
		// Pseudo/example code to find expired card
		return $this->count(function($paymentMethod) {
			return $paymentMethod->isExpired();
		}) > 0;
	}

	public function getCreditCards(): Collection
	{
		return $this->retrieve(function($paymentMethod) {
			// Logic to determine of $paymentMethod is a credit card
			// or another type
		});
	}

	public function getDefaultPaymentMethod(): ?PaymentMethod
	{
		// Find the default payment method
	}
}