array(1) { [0]=> string(3) "oia" }
array(6) { ["username"]=> string(3) "oia" ["password"]=> string(64) "5e884898da28047151d0e56f8dc6292773603d0d6aabbdd62a11ef721d1542d8" ["salt"]=> string(51) "»Ñ=¸kÅÌý[GW¢²çô-*Ï£ÂL" ["name"]=> string(7) "oioioio" ["joined"]=> string(19) "2017-04-22 14:06:57" ["group"]=> int(1) }

foreach($変数s as $変数)
{
    var_dump($変数);
}