_is_item_total_mismatch() – Attempts to detect if there’s an item total mismatch. This means the individual item breakdowns don’t add up to our proposed totals.
ArrayToXML::isAssoc() – Check if array is associative with string based keys FROM: http://stackoverflow.com/questions/173400/php-arrays-a-good-way-to-check-if-an-array-is-associative-or-sequential/4254008#4254008
Carbon::isSameMonth() – Checks if the passed in date is in the same month as the instance month (and year if needed).
Card::do_card_extension_installer() – Outputs the product card with the extension installer style markup.
Card::do_installer_action() – Installer cards have custom actions to output: activate/deactivate button; install button; upgrade link.
ClassLoader::isClassMapAuthoritative() – Should class lookup fail if not found in the current class map?
Customer_Meta::needs_initial_upgrade() – Whether the initial upgrade from the 1.0 database needs to be run.
Customers::needs_initial_upgrade() – Whether the initial upgrade from the 1.0 database needs to be run.
Data_Migrator::find_transaction_id_from_notes() – Attempts to locate a PayPal transaction ID from legacy payment notes.
Easy_Digital_Downloads::is_instantiated() – Return whether the main loading class has been instantiated or not.
