Brute force password list generator

passwd.php

<?PHP

$keys = "0 1 2 3 4 5 7 8 9 a b c d e f";
$keys = explode(' ', $keys);
$length = 8;


echo loop($length,$keys);

function loop($length,$keys,$depth=1,$buffer='')
{
	$prev = $buffer;
	foreach($keys as $i)
	{
		$buffer = "{$prev}$i";

		if($depth == $length)
			echo "$buffer\n";

		if($depth < $length)
		{
			$depth++;
			loop($length,$keys,$depth,$buffer);
			$depth--;
		}
	}
}