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<?php $int = 50; $arr['some' . ' complex' . ' index? with int ' . $int] = [[ 'type' => 'urls', 'urls' => ['url', 'murl', 'purl', 'turl']]]; $arrRef = &$arr['some' . ' complex' . ' index? with int ' . $int]; var_dump($arrRef);

preferences:
39.68 ms | 402 KiB | 5 Q