Split array into two arrays by index even or odd

Question

I have this array:

$array = array(a, b, c, d, e, f, g);

I want to split it in two arrays depending if the index is even or odd, like this:<

Answer 1

One more functional solution with array_chunk and array_map. The last line removes empty item from the 2nd array, when size of a source array is odd

list($odd, $even) = array_map(null, ...array_chunk($ar,2));
if(count($ar) % 2) array_pop($even);