function length_sort($v1, $v2)  // my function to use with usort :)
{
	return (strlen($v1) < strlen($v2)) ? -1 : 1;
}

$words = file('words_big.txt');  // Loads a wordlist into an array - about 100.000 words

usort($words, 'length_sort');  // This takes like forever :O