mbank_zakoduj_haslo.php

<?php

function mbank_zakoduj_haslo($haslo)
{
  $mapa = array(
    'a' => 'n',
    'b' => 'o',
    'c' => 'p',
    'd' => 'q',
    'e' => 'r',
    'f' => 's',
    'g' => 't',
    'h' => 'u',
    'i' => 'v',
    'j' => 'w',
    'k' => 'x',
    'l' => 'y',
    'm' => 'z',
    'n' => '1',
    'o' => '2',
    'p' => '3',
    'q' => '4',
    'r' => '5',
    's' => '6',
    't' => '7',
    'u' => '8',
    'v' => '9',
    'w' => '0',
    'x' => 'a',
    'y' => 'b',
    'z' => 'c',
    '1' => 'd',
    '2' => 'e',
    '3' => 'f',
    '4' => 'g',
    '5' => 'h',
    '6' => 'i',
    '7' => 'j',
    '8' => 'k',
    '9' => 'l',
    '0' => 'm',
  );

  for($i=0; $i<strlen($haslo); $i++)
  {
    if (!isset($mapa[$haslo[$i]])) {
      trigger_error('W Twoim haśle znajduje się znak niedozwolony.', E_USER_ERROR);
    }
    $haslo[$i] = $mapa[$haslo[$i]];
  }

  return $haslo;
}