I have an array list, like this one: http://pastebin.com/UKrrVyUs I need to remove the array4 because his category is the same of the array1
I was thinking to use unset but he remove the array leaving the position empty, how i can remove the array4 generating a new array list like:
Array( [0] => Array () [1] => Array () [2] => Array () [3] => Array () [4] => Array () )
where the array[4] is the previously Array[5] ?