After Connecting, you can execute a SQL statement and retrieve the results.

SELECT Procedure

You can execute queries using odbc_exec. This will return a resource that you can use to read results.

$stmt = odbc_exec($cnx, "SELECT Worker_Reference_WID, Legal_Name_Last_Name FROM [CData].[Human_Resources].Workers WHERE Legal_Name_Last_Name = 'Morgan'");

Iterating over the Results

You can use odbc_fetch_array to fetch the next row as an array.

while ($row = odbc_fetch_array($stmt)) {
    echo "Worker_Reference_WID = ", $row["Worker_Reference_WID"], "\n";
    echo "Legal_Name_Last_Name = ", $row["Legal_Name_Last_Name"], "\n";
}