Posted by LittleCake on 12/02/07 17:33

Hi All,
I have a multidimensional array where each sub-array contains just two
entries, which indicates a relationship between those two entries. for
example the first sub-array:
[0] => Array
(
[0] => 30
[1] => 31
)

This states that value 30 is related to 31. I would like to search
through the entire multidimensional array (it could be empty or
contain hundreds of entries), to see if multiple relationships exist
and hence group these relationships into one entry. so for the array
below:

Array
(
[0] => Array
(
[0] => 30
[1] => 31
)

[1] => Array
(
[0] => 29
[1] => 26
)

[2] => Array
(
[0] => 29
[1] => 27
)

[3] => Array
(
[0] => 29
[1] => 28
)

[4] => Array
(
[0] => 26
[1] => 27
)

[5] => Array
(
[0] => 27
[1] => 28
)
)

This should be represented as:
Array
(
[0] => Array
(
[0] => 30
[1] => 31
)

[1] => Array
(
[0] => 29
[1] => 26
[2] => 27
[3] => 28
)
)

I am new enough to PHP so I would appreciate your help.
Thanks

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