<?php
$lol = new szyfr();
$szyfr = "2";
$lol->code($szyfr);
class szyfr
{
    public function code($szyfr)
    {
     $codei = array('a' =>'3523532523','b' =>'4634325235','c' =>'3525325235','d' =>'6436346634','e' =>'6436346346','f' =>'7547454554','g' =>'2412412412','h' =>'7547457323','i' =>'visaegfasd','j' =>'4632634633','k' =>'4362352355','l' =>'3523523552','m' =>'4574573463','n' =>'4636346325','o' =>'4124124556','p' =>'2141241243','r' =>'5235325235','s' =>'6436436346','t' =>'5675674574','u' =>'gr34t3t543','w' =>'7567567567','y' =>'4363463466','z' =>'5475474574','A' =>'5325325235','B' =>'3525235235','C' =>'3252356325','D' =>'4436346363','E' =>'3563426464','F' =>'6585697667','G' =>'6575674357', 'H' =>'5675626436','I' =>'4634623646','J' =>'4534653263','K' =>'2432543665', 'L' =>'5345634634','M' =>'53253252','n' => 'f4e321fsd3','O' =>'idgaijdgsd','P' =>'3245231563','R' =>'1241241244','S' =>'3523543677','T' =>'3252352355', 'U' =>'2145124124', 'W' =>'4214124442','Y' =>'ef34f34ft3','Z' =>'3253252355', '1' =>'4363464366','2' =>'gdsggsxfgf','3' =>'3512df233t','4' =>'ieow5623ht','5' =>'3521j35o12','6' =>'5325325232','7' =>'4363464364','8' =>'c23f2f2f32','9' =>'f32rf23rf5','0' =>'252151fdew');
     $czynnik =str_split($szyfr);
     $tekst = "";
     foreach((array)$codei as $czynnik);
     $tekst.=$codei==""?"":$czynnik;
     var_dump($tekst);
    }
    public function decode ($szyfr)
    {
    $czynnik = str_split($szyfr);
    //tutaj rozszyfrowywanie
    }
}