Filter array - odd even

Question

How can a filter out the array entries with an odd or even index number?

Array
(
    [0] => string1
    [1] => string2
    [2] => string3
    [3] =&         


        

Answer 1

Here's a "hax" solution:

Use array_filter in combination with an "isodd" function.

array_filter seems only to work on values, so you can first array_flip and then use array_filter.

array_flip(array_filter(array_flip($data), create_function('$a','return $a%2;')))