Null returned when row has values

[Herb Isaacs]

I am a newbie to php/mysql. I have a test php script that has successfully connected to a mysql database which has a single table and one record populated in all fields. When I do a var_dump of my results, I get NULL. I have queried the database both in Mysqlworkbench and phpmyadmin. Both return the record, but my code does not. Here is the code, minus the connection details:

*******************************************
mysql_select_db ("herbisaa_fsr", $dbh);

echo "completed connection<br>";

$q=mysqli_query($dbh, "SELECT FirstName, LastName FROM herbisaa_fsr.MasterPerson");

echo "completed query<br>";

var_dump($q );
********************************************************

Here is what I get from my script:
completed connection
completed query
NULL

I am at a loss to figure this out. Any help would be greatly appreciated.

Herb