Is this class pratical?

[harmor19]

I am trying to learn OOP and I am in that experimenting stage where I just try whatever.

Should I keep the class below?

PHP Code:

class Query
{  
    var $table;
    var $where;
    var $id;
    
   function mysql_get_row()
    {
        $getuser = mysql_query("SELECT * FROM ".$this->table." WHERE ".$this->where." = '".$this->id."' ")or die(mysql_error());
        return mysql_fetch_array($getuser);
        
    }
}

$ah = new Query;
$ah->table = "user";
$ah->where = "userid";
$ah->id = 1;
$row = $ah->mysql_get_row();

echo "User ID: ".$row['userid']."<br />
       Username: ".$row['username']." <br />
       Posts: ".$row['posts']."<br />";