php

var Encrypt = Encrypt('hello word','abcdefghijklmnopqrstuvwxyz');
  //8-5-12-12-15 23-15-18-4
var Decrypt = Decrypt('8-5-12-12-15 23-15-18-4','abcdefghijklmnopqrstuvwxyz');
  //hello word

js

var Encrypt = Encrypt('Hello World');
  //8-5-12-12-15 23-15-18-12-4
var Decrypt = Decrypt("8-5-12-12-15 23-15-18-12-4");
  //hello word