I have an array that looks similar to this:
Array
(
[0] => Array
(
[0] => Model2345
[1] => John Doe
[2] => SN1234
)
[1] => Array
(
[0] => Model2345
[1] => John Doe
[2] => SN3456
)
[2] => Array
(
[0] => Model1234
[1] => Jane Doe
[2] => SN3456
)
)
I want to have a way to check for duplicate values for keys [1] (the John Doe/Jane Doe key) and [2] (the SNxxxx key) in php, but ignore duplicates for key [0]. How can this be accomplished?