Text to Int Encoder & Decode Helper

<?php

///////////////////////////////////////////////////////
//** Text to Int Encoder
//** Text to Int Decode Helper
//** Copyright by Narzew
//** http://pokepark.tk
//** 29.11.12
///////////////////////////////////////////////////////

///////////////////////////////////////////////////////
//**encode_ints
//**Encodes string to int (one-way!)
///////////////////////////////////////////////////////

function encode_ints($text){
 $letters = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z');
 $ints = array('2','2','2','3','3','3','4','4','4','5','5','5','6','6','6','7','7','7','7','8','8','8','9','9','9','9');
 return str_replace($letters, $ints, strtolower($text));
}

///////////////////////////////////////////////////////
//**decode_ints
//**Helps decoding ints making possibilities to each int
///////////////////////////////////////////////////////

function decode_ints($text){
 $letters = array('(abc)','(abc)','(abc)','(def)','(def)','(def)','(ghi)','(ghi)','(ghi)','(jkl)','(jkl)','(jkl)','(mno)','(mno)','(mno)','(pqrs)','(pqrs)','(pqrs)','(pqrs)','(tuv)','(tuv)','(tuv)','(wxyz)','(wxyz)','(wxyz)','(wxyz)');
 $ints = array('2','2','2','3','3','3','4','4','4','5','5','5','6','6','6','7','7','7','7','8','8','8','9','9','9','9');
 return str_replace($ints,$letters, $text);
}

///////////////////////////////////////////////////////
//**End of script
///////////////////////////////////////////////////////

///////////////////////////////////////////////////////
//**Copyright by Narzew
//**http://pokepark.tk
///////////////////////////////////////////////////////
?>