Question

Looking at this array, one can see that only the foo6 value differs from each parent key:

Array
(
    [0] => Array
        (
          [foo1] => Apple
          [foo2] => Banana
          [foo3] => Carrots
          [foo4] => Deer
          [foo5] => Feather
          [foo6] => Grapes
        )
    [1] => Array
        (
          [foo1] => Apple
          [foo2] => Banana
          [foo3] => Carrots
          [foo4] => Deer
          [foo5] => Feather
          [foo6] => Heater
        )
    [2] => Array
        (
          [foo1] => Apple
          [foo2] => Banana
          [foo3] => Carrots
          [foo4] => Deer
          [foo5] => Feather
          [foo6] => Quail Eggs
        )
)

The query:

SELECT
  tpp.page_master_properties_style AS foo1,
  tpp.page_master_properties_bg AS foo2,
  tpp.page_master_properties_data AS foo3,
  tpp.page_properties_style AS foo4,
  tpp.page_properties_bg AS foo5,
  tpp.page_properties_data AS foo6,
  tobj.objects_script AS foo6
FROM templates t
  INNER JOIN category tc
    ON t.category_id = tc.category_id
  INNER JOIN page_properties tpp
    ON t.templates_id = tpp.templates_id
  INNER JOIN objects tobj
    ON t.templates_id = tobj.templates_id
WHERE
  t.templates_id = ?

where ? = 1

This is probably because Table objects has multiple entry for templates_id:

+--------------+----------------+-----------------+
|  objects_id  |  templates_id  |  objects_script |
+--------------+----------------+-----------------+
|       1      |        1       |      Grapes     |
|       2      |        1       |      Heater     |
|       3      |        1       |     Quail Eggs  |
|       4      |        2       |       Milk      |
|       5      |        3       |       Lemon     |
+--------------+----------------+-----------------+

I’m wondering is there any built-in mySQL function that can combine foo6 into a singular array for example to achieve result like this:

Array
(
  [foo1] => Apple
  [foo2] => Banana
  [foo3] => Carrots
  [foo4] => Deer
  [foo5] => Feather
  [foo6] => Array
            (
              [0] => Grapes
              [1] => Heater
              [2] => Quail Eggs
            )
)

Answer 1

This looks like a job for group_concat in the mysql arsenal:

SELECT
  tpp.page_master_properties_style AS foo1,
  tpp.page_master_properties_bg AS foo2,
  tpp.page_master_properties_data AS foo3,
  tpp.page_properties_style AS foo4,
  tpp.page_properties_bg AS foo5,
  group_concat(tpp.page_properties_data) AS foo6,
  tobj.objects_script AS foo6
FROM templates t
  INNER JOIN category tc
    ON t.category_id = tc.category_id
  INNER JOIN page_properties tpp
    ON t.templates_id = tpp.templates_id
  INNER JOIN objects tobj
    ON t.templates_id = tobj.templates_id
WHERE
  t.templates_id = ?
GROUP BY
  tpp.page_master_properties_style AS foo1,
  tpp.page_master_properties_bg AS foo2,
  tpp.page_master_properties_data AS foo3,
  tpp.page_properties_style AS foo4,
  tpp.page_properties_bg AS foo5

This will group all the rows in tpp.page_properties_data together into the only row of data and split them by commas – which you can then easily explode into an array when you loop through the dataset.