Programming PHP

page, and actually adding the information to the database. The value passed into the
script by the submit button indicates how the script should behave. We use autocommit
to optimize the code somewhat: if we’re displaying the confirmation page,
we turn off autocommit, add the record to the database, and display it. When the
script ends, the addition is rolled back. If we’re actually adding the information, we
leave autocommit on but otherwise do exactly the same database steps as for confirmation,
so the addition isn’t rolled back at the end of the script.
Example 15-5. Add new phone number, with confirmation
ODBC Transaction Management
Phone List