$symbols = array("a", "b", "c");

for($a = 0; $a < count($symbols); $a++) //1
{
$generated .= $symbols[$a]."\r\n"; //1
for($b = 0; $b < count($symbols); $b++) //2
{
$generated .= $symbols[$a].$symbols[$b]."\r\n"; //2
for($c = 0; $c < count($symbols); $c++) //3
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c]."\r\n"; //3
for($d = 0; $d < count($symbols); $d++) //4
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d]."\r\n"; //4
for($e = 0; $e < count($symbols); $e++) //5
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e]."\r\n"; //5
for($f = 0; $f < count($symbols); $f++) //6
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f]."\r\n"; //6
for($g = 0; $g < count($symbols); $g++) //7
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g]."\r\n"; //7
for($h = 0; $h < count($symbols); $h++) //8
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h]."\r\n"; //8
for($i = 0; $i < count($symbols); $i++) //9
{
for($j = 0; $j < count($symbols); $j++) //10
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j]."\r\n"; //10
for($k = 0; $k < count($symbols); $k++) //11
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j].$symbols[$k]."\r\n"; //11
for($l = 0; $l < count($symbols); $l++) //12
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j].$symbols[$k].$symbols[$l]."\r\n";

//12
for($m = 0; $m < count($symbols); $m++) //13
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j].$symbols[$k].$symbols[$l].

$symbols[$m]."\r\n"; //13
for($n = 0; $n < count($symbols); $n++) //14
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j].$symbols[$k].$symbols[$l].

$symbols[$m].$symbols[$n]."\r\n"; //14
for($o = 0; $o < count($symbols); $o++) //15
{
$generated .= $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d].$symbols[$e].$symbols[$f].$symbols[$g].$symbols[$h].$symbols[$i].$symbols[$j].$symbols[$k].$symbols[$l].

$symbols[$m].$symbols[$n].$symbols[$o]."\r\n"; //15
}}}}}}}}}}}}}}}

$fp = fopen("wordlist.txt", "w");

$symbols = array("a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F",

"G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "`", "~", "!", "@", "#", "$", "%", "^", "&", "*", "(", ")", "_", "-", "+",

"=", "[", "]", "{", "}", "|", "\"", "\\", "", "'", ";", ":", "<", ">", ",", ".", "?", "/", "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "ą", "ć", "ę", "ł", "ń", "ó", "ś",

"ź", "ż", "Ą", "Ć", "Ę", "Ł", "Ń", "Ó", "Ś", "Ź", "Ż", "©", "®", "™");

for($a = 0; $a < count($symbols); $a++)
{
fwrite($fp, $symbols[$a]."\r\n");
for($b = 0; $b < count($symbols); $b++)
{
fwrite($fp, $symbols[$a].$symbols[$b]."\r\n");
for($c = 0; $c < count($symbols); $c++)
{
fwrite($fp, $symbols[$a].$symbols[$b].$symbols[$c]."\r\n");
for($d = 0; $d < count($symbols); $d++)
{
fwrite($fp, $symbols[$a].$symbols[$b].$symbols[$c].$symbols[$d]."\r\n");
}}}}

fclose($fp);