Source of file KeylistHydrator.php

<?php

namespace TIC\DormBundle\Hydration;

use Doctrine\ORM\Internal\Hydration\AbstractHydrator;

/**

 * Récupération des résultats groupés par les valeurs de la 1ère colonne (en index).

 * Note: colonne 1 en clé et colonne 2 en valeurs uniquement

 *

 * Exemple:

 *   > SELECT a, b, c FROM t

 *   < array(

 *       a1 => array( b1 ),

 *       a2 => array( b2, b22 ),

 *       ...

 *     )

 */

class KeylistHydrator extends AbstractHydrator

{

	/**

	 * Hydrates all rows from the current statement instance at once.

	 *

	 * @return mixed[]

	 */

	protected function hydrateAllData(): array

	{

		$result = array();

		while ($data = $this->statement()->fetchNumeric()) {

			if (! \is_array($data) || \count($data) < 2) continue;

			$key = $data[0];

			if     ($key === null) $key = '[_NULL_]';

			elseif ($key === '')   $key = '[_EMPTY_]';

			$val = (\count($data) > 1) ? $data[1] : $data[0];

			if (! isset($result[ $key ])) $result[ $key ] = array();

			$result[ $key ][] = $val;

		}

		return $result;

	}

	/**

	 * BC layer for a wide-spread use-case of old DBAL APIs

	 *

	 * @deprecated This API is deprecated and will be removed after 2022

	 */

#	protected function hydrateAllData(): array

#	{

#		return $this->_stmt->fetchAll(\PDO::FETCH_COLUMN|\PDO::FETCH_GROUP, null);

#	}

}