PHP Encrypt/Decrypt Function

encrypt-decrypt.php

  function encrypt($mprhase) {
        $MASTERKEY = "some key here";
        $td = mcrypt_module_open('tripledes', '', 'ecb', '');
        $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
        mcrypt_generic_init($td, $MASTERKEY, $iv);
        $crypted_value = mcrypt_generic($td, $mprhase);
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        return base64_encode($crypted_value);
    } 
    function decrypt($mprhase) {
        $MASTERKEY = "some key here";
        $td = mcrypt_module_open('tripledes', '', 'ecb', '');
        $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
        mcrypt_generic_init($td, $MASTERKEY, $iv);
        $decrypted_value = mdecrypt_generic($td, base64_decode($mprhase));
        mcrypt_generic_deinit($td);
        mcrypt_module_close($td);
        return $decrypted_value;
    }