wikimedia/mediawiki-extensions-Wikibase

<?php

namespace Wikibase\Lib\Store;

/**
 * Interface that contains method for the PropertyOrderProvider
 *
 * @license GPL-2.0-or-later
 * @author Lucie-Aimée Kaffee
 */
interface PropertyOrderProvider {

    /**
     * Get order of properties in the form [ $propertyIdSerialization => $ordinalNumber ]
     *
     * @return null|int[] An associative array mapping property ID strings to ordinal numbers.
     *     The order of properties is represented by the ordinal numbers associated with them.
     *     The array is not guaranteed to be sorted.
     *     Null if no information exists.
     * @throws PropertyOrderProviderException
     */
    public function getPropertyOrder();

}