$text_lenght = 3;
$charset = 'qwertyuiopasdfghjklzxcvbnm';
$charset_length = strlen($charset);
function create_word($width, $position, $base_string)
{
global $text_lenght, $charset, $charset_length;
for ($i = 0; $i < $charset_length; ++$i) {
if ($position < $width - 1) {
create_word($width, $position + 1, $base_string . $charset[$i]);
}
if (strlen($base_string.$charset[$i]) <= $text_lenght) {
echo $base_string.$charset[$i].'</br>';
}
}
}
create_word($text_lenght, 0, '');$text_lenght = 3;
$charset = 'qwertyuiopasdfghjklzxcvbnm';
$results = [];
create_words($text_lenght);
sort($results);
foreach ($results as $i => $result) {
echo ++$i . '. ' . $result . '<br>';
}
function create_words(string $width, int $position = 0, string $base_string = ''): void
{
global $text_lenght, $charset, $results;
for ($i = 0, $j = strlen($charset); $i < $j; ++$i) {
if ($position < $width - 1) {
create_words($width, $position + 1, $base_string . $charset[$i]);
}
if (strlen($base_string . $charset[$i]) <= $text_lenght) {
$results[] = $base_string . $charset[$i];
}
}
}