How can PHP be used to handle the process of saving invoice items to a temporary database before finalizing and storing them in a permanent database?
To handle the process of saving invoice items to a temporary database before finalizing and storing them in a permanent database, you can create a temporary table in your database to store the invoice items temporarily. When the user is ready to finalize the invoice, you can then transfer the data from the temporary table to the permanent table. This approach allows you to keep track of the invoice items before committing them to the permanent storage.
// Create a temporary table to store invoice items temporarily
$createTempTableQuery = "CREATE TEMPORARY TABLE temp_invoice_items (id INT AUTO_INCREMENT PRIMARY KEY, item_name VARCHAR(255), quantity INT, price DECIMAL(10,2))";
// Insert invoice items into the temporary table
$insertTempItemQuery = "INSERT INTO temp_invoice_items (item_name, quantity, price) VALUES ('Item 1', 2, 10.00), ('Item 2', 1, 20.00)";
// Transfer data from temporary table to permanent table when finalizing the invoice
$finalizeInvoiceQuery = "INSERT INTO permanent_invoice_items (item_name, quantity, price) SELECT item_name, quantity, price FROM temp_invoice_items";
// Drop the temporary table after finalizing the invoice
$dropTempTableQuery = "DROP TEMPORARY TABLE IF EXISTS temp_invoice_items";