*/ protected array $features; /** * @param array $features * @param CoordinateReferenceSystem|BoundingBox $args */ public function __construct(array $features, ...$args) { foreach ($features as $feature) { if (! $feature instanceof Feature) { throw new InvalidArgumentException('FeatureCollection may only contain Feature objects'); } } $this->features = array_values($features); $this->setOptionalConstructorArgs($args); } public function count(): int { return count($this->features); } /** * Return the Feature objects in this collection. * * @return array */ public function getFeatures(): array { return $this->features; } public function getIterator(): Traversable { return new ArrayIterator($this->features); } public function jsonSerialize(): array { return array_merge( parent::jsonSerialize(), ['features' => array_map( static fn(Feature $feature) => $feature->jsonSerialize(), $this->features )] ); } }