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 AccountId, AccountNumber FROM Accounts WHERE ModifiedBy = 'System'");

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 "AccountId = ", $row["AccountId"], "\n";
    echo "AccountNumber = ", $row["AccountNumber"], "\n";
}