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