[PHP] pobierz, plaintext <?php$t = md5(uniqid(rand(), true));echo substr($t,0,4);?>[PHP] pobierz, plaintext
[PHP] pobierz, plaintext <?php$str = ''; for($a=0;$a<=4;$a++){ $x = mt_rand(0,1); if($x){ $str .= chr(mt_rand(48,57)); }else{ $str .= chr(mt_rand(97,122)); }}?>[PHP] pobierz, plaintext
[PHP] pobierz, plaintext <?php$chars = array('a', 'ą', 'b', 'c', 'ć' ...);$chars .= array(1, 2, 3, 4, 5, 6, 7, 8, 9, 0);$chars = substr(join('', shuffle($chars)), 0, 4);?>[PHP] pobierz, plaintext