select * form padre INNER JOIN hijos on padre.pnt_id=hijos.id_pnt;

padre                              hijos
+-----+----------+------+-------+   +-----+----------+-------+
| id  |   pnt_id | info |infotwo|   | id  |   id_pnt |n_child|...
+-----+----------+------+-------+   +-----+----------+-------+
|    1|         7| home | big   |   |    5|         7|  joan |
+-----+----------+------+-------+   +-----+----------+-------+
|    2|         8| work | fat   |   |    3|         7|  luci |
+-----+----------+------+-------+   +-----+----------+-------+
|    3|         9| soft |  thin |   |    6|         8|  troy |
+-----+----------+------+-------+   +-----+----------+-------+

print_r($parents);

$parents = arrar (
          info -> "home",
          infotwo -> "big",
          data_child -> arrar (
                      n_child -> "joan",
                      n_child -> "luci"
                     )
)