Remove “columns” from the subarrays of a two dimensional array

Question

I have a simple, two dimensional array like this:

Array
    (
        [0] => Array
            (
                [0] => abc
                [1] => 1         


        

Answer 1

Anything wrong with just looping through it?

for ( $i = 0; $i < sizeof($input); $i++ ) {
    for ( $j = 0; $j < $n; $j++ ) {
        $output[$i][$j] = $input[$i][$j];
    }
}
return $output;