PHP converting simple array to more complex associative array - php

Question

My selection from DB returns this:
Array
(
[0] => Array
(
[bin_full] => AA010101
[letter1_zone] => A
[letter2_aisle] => A
[letter34_bay] => 01
[letter56_level] => 01
[letter78_bin] => 01
)
[1] => Array
(
[bin_full] => AA010102
[letter1_zone] => A
[letter2_aisle] => A
[letter34_bay] => 01
[letter56_level] => 01
[letter78_bin] => 02
)
[2] => Array
(
[bin_full] => AA010201
[letter1_zone] => A
[letter2_aisle] => A
[letter34_bay] => 01
[letter56_level] => 02
[letter78_bin] => 01
)
As you can see, its basically the first item bin_full, being broken up into first letter, second letter, then next 2 numbers, next 2 numbers and finally the last 2 numbers. The pattern is the same, I need each level grouped together in an assoc array.
If I then do this, I'm mostly getting the result I want, but it needs a tweak and I'm not sure how to do that..
foreach ($data_full as $row) {
foreach ($row as $key2 => $value2) {
$data_array[$row['letter1_zone']][$row['letter2_aisle']][$row['letter34_bay']][$row['letter56_level']][$row['letter78_bin']] = $value2;
}
}
This results in:
Array
(
[A] => Array
(
[A] => Array
(
[01] => Array
(
[01] => Array
(
[01] => 01
[02] => 02
)
[02] => Array
(
[01] => 01
[02] => 02
)
[03] => Array
(
[01] => 01
)
)
)
)
)
I need the last array to be:
[0] => 01
[1] => 02
not
[01] => 01
[02] => 02
In full, I need this:
Array
(
[A] => Array
(
[A] => Array
(
[01] => Array
(
[01] => Array
(
[0] => 01
[1] => 02
)
[02] => Array
(
[0] => 01
[1] => 02
)
[03] => Array
(
[0] => 01
)
)
)
)
)
Thanks

Answer 1

All you have to do is replace this :
foreach ($data_full as $row) {
foreach ($row as $key2 => $value2) {
$data_array[$row['letter1_zone']][$row['letter2_aisle']][$row['letter34_bay']][$row['letter56_level']][$row['letter78_bin']] = $value2;
}
}
with this :
foreach ($data_full as $row) {
$data_array[$row['letter1_zone']][$row['letter2_aisle']][$row['letter34_bay']][$row['letter56_level']][] = $row['letter78_bin'];
}
so you replace the last index with a "add new element": []. It will first add index 0, then 1, then 2, etc...

Answer 2

$data_array[$row['letter1_zone']][$row['letter2_aisle']][$row['letter34_bay']][$row['letter56_level']][] = $value2;