$query = "SELECT * FROM users"; $result = $db->query($query); while ($row = $result->fetchRow(DB_FETCHMODE_ASSOC)) { echo $row['username'] . "In this example, we first execute a query to select all users from a table. We then use a while loop to iterate through each row of the result set, and fetch the row as an associative array using the self fetchRow method. We can then access the values in the row using their corresponding keys. The self fetchRow method is part of a package library called PEAR DB. PEAR DB is a database abstraction layer that provides a consistent and easy-to-use interface to database operations in PHP. It includes support for a wide variety of databases, including MySQL, PostgreSQL, Oracle, and Microsoft SQL Server.
"; }