Source of file KeyvalHydrator.php

<?php

namespace TIC\DormBundle\Hydration;

use Doctrine\ORM\Internal\Hydration\AbstractHydrator;

/**

 * Récupération de paires clé/valeur pour chaque ligne de résultat.

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

 *

 * Exemple:

 *   > SELECT a, b, c FROM t

 *   < array(a1 => b1, a2 => b2, a3 => b3 ...)

 */

class KeyvalHydrator extends AbstractHydrator

{

	/**

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

	 *

	 * @return mixed[]

	 */

	protected function hydrateAllData(): array

	{

		$result = array();

#		while ($data = $this->_stmt->fetch(\PDO::FETCH_NUM)) {

		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_]';

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

		}

		return $result;

	}

}