$db = DB::connect('mysql://user:password@localhost/database'); if ($db->in_transaction()) { echo "A transaction is in progress."; } else { echo "No transaction is in progress."; }
$db = DB::connect('mysql://user:password@localhost/database'); try { $db->begin(); //perform database operations here $db->commit(); } catch (Exception $e) { $db->rollback(); }In this example, we use the in_transaction function together with the begin, commit, and rollback functions to execute a database transaction. We first begin the transaction, perform some database operations, and then commit the changes. If an exception is thrown during the transaction, we rollback the changes made. We use the in_transaction function to determine if a transaction is already in progress before beginning a new one. The PHP DB package library is a database abstraction library that provides a consistent API for accessing different databases. It supports various databases such as MySQL, PostgreSQL, Oracle, Microsoft SQL Server, SQLite, and more.