Function

function mcrypt($key, $input,$mode = 'E'){

    $key = substr(md5($key), 0, 24);
    $td = mcrypt_module_open('tripledes','','ecb','');
    $iv = mcrypt_create_iv(mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
    mcrypt_generic_init($td, $key, $iv);

    $encrypted_data = '';
    //进行加密
    if(strtoupper($mode) == 'D')
    {
        $encrypted_data = mdecrypt_generic($td, $input);

    }
    else
    {
        $encrypted_data = mcrypt_generic($td, $input);

    }

    mcrypt_generic_deinit($td);
    mcrypt_module_close($td);

    return $encrypted_data;
}

var_dump()

var_dump(mcrypt('122223','121212'));

结果

string 'b��t��' (length=8)

怎么解决这个问题? - _ -|||