Selecting every nth item from an array

Question

What would be the most efficient way to select every nth item from a large array? Is there a \'smart\' way to do it or is looping the only way?

Some points to c

Answer 1

I recommend to using array_slice

$count = count($array) ;
for($i=205;$i<$count;$i+=205){
    $result[] = array_slice($array,$i,1);
}

If your array was numerically indexed, this would be very fast:

$count = count($array) ;
for($i=205;$i<$count;$i+=205){
    $result[] = $array[$i];
}