- var_dump: documentation ( source)
- floor: documentation ( source)
<?php
// convert decimal to base 2 without using base_convert
$base = 2;
$num = 23;
while( $num > 0)
{
$arr[] = $num % $base; // store remainder in array
$num = floor($num/$base); // no integer division
}
var_dump($arr,$num);