int to string for CZ

int_to_string.php

<?php
function int_to_text($int, $x = 1) 
{
        $len = strlen($int);
        // desítky + jednotky
        if(($len - 2) >= 0)
                $des = substr($int, $len - 2, 2); //dvojciferne
        else $des = substr($int, $len - 1, 1); //jednociferne
        if($des < 21)
                $des_text = int_to_text_basic($des, $x);
        else {
                $des_text  = int_to_text_basic(substr($des, 0, 1) . '0', $x);
                $des_text .= int_to_text_basic(substr($des, 1, 1), $x);
        }
        if($len > 2) { //stovky
                $sto = substr($int, $len - 3, 1);
                $sto_text = int_to_text_basic($sto, 3);
                if($sto == 0) {}
                elseif($sto == 1) $sto_text .= 'sto';
                elseif($sto == 2) $sto_text .= 'stě';
                elseif($sto > 2 && $sto < 5) $sto_text .= 'sta';
                else $sto_text .= 'set';
        }
        if($len > 3) { // tisíce
                if(($len - 6) >= 0)
                        $tis = substr($int, $len - 6, 3);
                elseif(($len - 5) >= 0)
                        $tis = substr($int, $len - 5, 2);
                else $tis = substr($int, $len - 4, 1);
                $tis_text = int_to_text($tis, 4);
                if($tis == 0) {}
                elseif($tis == 1) $tis_text .= 'tisíc';
                elseif($tis > 1 && $tis < 5) $tis_text .= 'tisíce';
                else $tis_text .= 'tisíc';
        }
        if($len > 6) { //miliony
                if(($len - 9) >= 0)
                        $mil = substr($int, $len - 9, 3);
                elseif(($len - 8) >= 0)
                        $mil = substr($int, $len - 8, 2);
                else $mil = substr($int, $len - 7, 1);
                $mil_text = int_to_text($mil, 7);
                if($mil == 0) {}
                elseif($mil == 1) $mil_text .= 'milion';
                elseif($mil > 1 && $mil < 5) $mil_text .= 'milion';
                else $mil_text .= 'milionů';
        }
        return $mil_text . '' . $tis_text . '' . $sto_text . '' . $des_text;
}

function int_to_text_basic($i, $r = 1) 
{
        switch($i) {
                case 1:   $t = 'jedna';                 break;          case 2:   $t = 'dva';                   break;
                case 3:   $t = 'tři';                   break;          case 4:   $t = 'čtyři';                 break;
                case 5:   $t = 'pět';                   break;          case 6:   $t = 'šest';                  break;
                case 7:   $t = 'sedm';                  break;          case 8:   $t = 'osm';                   break;
                case 9:   $t = 'devět';                 break;          case 10:  $t = 'deset';                 break;
                case 11:  $t = 'jedenáct';              break;          case 12:  $t = 'dvanáct';               break;
                case 13:  $t = 'třináct';               break;          case 14:  $t = 'čtrnáct';               break;
                case 15:  $t = 'patnáct';               break;          case 16:  $t = 'šestnáct';              break;
                case 17:  $t = 'sedmnáct';              break;          case 18:  $t = 'osmnáct';               break;
                case 19:  $t = 'devatenáct';    break;          case 20:  $t = 'dvacet';                break;
                case 30:  $t = 'třicet';                break;          case 40:  $t = 'čtyřicet';              break;
                case 50:  $t = 'padesát';               break;          case 60:  $t = 'šedesát';               break;
                case 70:  $t = 'sedmdesát';             break;          case 80:  $t = 'osmdesát';              break;
                case 90:  $t = 'devadesát';             break;
        }
        switch($r) {
                case 3: //stovky
                        switch($i) {
                                case 1: $t = 'jedno';   break;                          case 2: $t = 'dvě';     break;
                        }
                        break;
                case 4: //tisice
                case 7: //miliony
                        switch($i) {
                                case 1: $t = 'jeden';   break;
                        }
                        break;
        }
        return $t;
}