How can the error message "supplied argument is not a valid ODBC result" be resolved when working with ODBC connections in PHP?

The error message "supplied argument is not a valid ODBC result" typically occurs when trying to fetch results from an ODBC query without first checking if the query was successful. To resolve this issue, you should verify that the query executed successfully before attempting to fetch results.

// Perform the ODBC query
$result = odbc_exec($connection, $query);

// Check if the query was successful
if ($result) {
    // Fetch results from the ODBC query
    while ($row = odbc_fetch_array($result)) {
        // Process the fetched data
    }
} else {
    // Handle the case where the query was not successful
    echo "Error executing ODBC query: " . odbc_errormsg($connection);
}