Source of file GroupbyHydrator.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).

 *

 * Exemple:

 *   > SELECT a, b, c FROM t

 *   < array(

 *       a1 => array(

 *         array('b' => b1,  'c' => c1),

 *       ),

 *       a2 => array(

 *         array('b' => b2,  'c' => c2),

 *         array('b' => b22, 'c' => c22),

 *       ),

 *       ...

 *     )

 */

class GroupbyHydrator extends AbstractHydrator

{

	/**

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

	 *

	 * @return mixed[]

	 */

	protected function hydrateAllData(): array

	{

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

		$result = array();

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

			$key = \array_shift($data);

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

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

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

			$result[ $key ][] = $data;

		}

		return $result;

	}

}