class.ilAccessibilityCriterionConfig.php

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<?php

class ilAccessibilityCriterionConfig extends ArrayObject implements ilAccessibilityJsonSerializable
{
    public function __construct($data = [])
    {
        if (is_array($data)) {
            parent::__construct($data);
        } else {
            parent::__construct([]);

            if (is_string($data)) {
                $this->fromJson($data);
            }
        }
    }

    public function toJson(): string
    {
        $json = json_encode($this);

        return $json;
    }

    public function fromJson(string $json): void
    {
        $data = json_decode($json, true);

        $this->exchangeArray($data);
    }

    public function jsonSerialize(): array
    {
        return $this->getArrayCopy();
    }
}