为什么在回显变量时，替换字符会不断出现？

I'm creating a test application and keeping the name of the person who is taking it on a table, along with the answers. The problem lies when I enter the following characters

á é í ó ú ñ

I've tried some methods (like iconv function) but still not working.

//A sample of the code

require('../connect_db.php');
setlocale(LC_ALL,"es_ES");
mysql_query("SET NAMES 'utf8'");

$sql  =  "SELECT *
          FROM database.test";
$result     = mysql_query($sql) or die (mysql_error());
$row        = mysql_fetch_array($result);
$name      = utf8decode($row[1]);

echo mb_detect_encoding($name); //Just to test
echo $name;

The result:

UTF-8 G�mez

Edit: The problem is not on the database. I've manually entered names with these characters with no problem, so it must be the code.

SOLVED

There was no need to run the first utf8decode() when assigning values to $name

Instead I just called the function at the echo