Convert Encrypt Decrypt Java Code to PHP or VB6

I want to convert the encryption and decryption code, from JAVA language to PHP or VB6. The code is simple, but I did not master java. You can choose to be a PHP or VB6. If you could convert to PHP and VB6 it would be better. A complete file in the attachment. Thank you for your concern. The following java code snippet:     public static String decrypt (String string) {         try {             [login to view URL] (2, (Key) key);             byte [] arrby = [login to view URL] (string);             String string2 = [login to view URL] ([login to view URL] (arrby));             return string2;         }         catch (Exception var1_3) {             [login to view URL] ();             return null;         }     }     public static String encrypt (String string) {         try {             [login to view URL] (1, (Key) key);             byte [] arrby = [login to view URL] ("UTF8");             String string2 = [login to view URL] ([login to view URL] (arrby));             return string2;         }         catch (Exception var1_3) {             [login to view URL] ();             return null;         }     }