(Introduction to WordPress plug-inCreate WordPress plug-inLearn about hooks: actions (add_action and do_action)Understanding hooks: operations with parametersUnderstanding hooks: common operation casesIdentify hooks: filters (add_filter and apply_filters)Identification hook: filter with parametersRecognize hooks: common filter use casesSubmenu creation and background integration;Back end integration: creating widgetsBackend integration: metadata boxBackground integration: user defined plug-in interfaceHow to save plug-in settingsHow to save plug-in settings using APICreate classes for your own plug-insOptions to add to an existing management interfaceCall Ajaxlocalization Plug in permission controlShort labelExtend custom post typeDecompression password: