How to convert an integer to an array in PHP?

Question

What would be the most simple way to convert an integer to an array of numbers?

Example:

2468 should result in array(2,4,6,8).

Answer 1

You can use str_split and intval:

$number = 2468;

    $array  = array_map('intval', str_split($number));

var_dump($array);

Which will give the following output:

array(4) {
  [0] => int(2)
  [1] => int(4)
  [2] => int(6)
  [3] => int(8)
}

Demo

Answer 2

You can cut-off the last digit by taking the number modulo 10.

Don't tell it to anyone!

do 
{
    $array.add(num % 10);
    num = num / 10;
}
while (num != 0);