Write a php function

I need a function that will conect to a mysql database and get a value from a table based on a extension. I tried something like this: function getDomainPrice(){ global $con; $query = $con->query("SELECT [login to view URL] 'tld', [login to view URL] FROM tblpricing p INNER JOIN tbldomainpricing dp ON [login to view URL] = [login to view URL] WHERE [login to view URL] = '.ro' AND p.type='domainregister' AND [login to view URL] = 1 ORDER BY [login to view URL] ASC"); $dataArray=array(); while($row = @mysqli_fetch_array($query, MYSQLI_ASSOC)) $dataArray[$row['tld']]=$row; return $dataArray; } And I need to call this function from using getDomainPrice(.ro); and get the domain price from database.