function better_crypt($input, $rounds = 9)
 {
   $salt = "";
   $salt_chars = array_merge(range('A','Z'), range('a','z'), range(0,9));
   for($i=0; $i < 22; $i++) {
    $salt .= $salt_chars[array_rand($salt_chars)];
  }
   return crypt($input, sprintf('$2a$%02d$', $rounds) . $salt);
 }
   $password_hash = better_crypt($input);

$password_hash = better_crypt($db_password_hash);

  if (crypt($user_password, $password_hash) == $password_hash) {
  echo '<br>';
  echo 'true';
  }else{
  echo '<br>';
  echo 'false';
  }