Is SET NAMES properly place inside this method?

[co.ador]

I have set up SET NAMES in the method below don't know if it is properly placed any suggestions becuase the rating system still doesn't work and want to know if The SET NAMES is all set and continue looking for another possible source for the problem.

 

 

<?php    public static function ExecuteQuery( $sql, $name)
      {
        if (self::$connection)
        {
          if (strlen(trim($name)) != 0)
          {
            switch (self::$type)
            {
              case "mysql":
                if (!array_key_exists($name, self::$savedQueries))
                {
                  self::$savedQueries[$name] = @mysql_query( "SET NAMES 'utf8'", $sql, self::$connection) or Error::LogError("Query Failed", mysql_error(self::$connection));
                }
                break;
              case "mysqli":
                if (!array_key_exists($name, self::$savedQueries))
                {
                  self::$savedQueries[$name] = @mysqli_query(self::$connection, $sql) or Error::LogError("Query Failed", mysqli_error(self::$connection));
                }
                break;
            }
            
            return self::$savedQueries[$name];
          }?>