Determines whether the current admin page is generated by a plugin.

Learn how to use the WordPress 'install_theme_information()' PHP function to display theme information in various ways such as a dialog box or on an admin page

Learn how to use the WordPress 'install_themes_upload()' PHP function to display a theme upload form in various ways such as on a custom page or widget

This article explains how to use the WordPress `install_themes_dashboard()` PHP function to display theme filters on various pages and interfaces

Learn how to use the WordPress 'install_search_form()' PHP function to display a search form for searching plugins in your website

Learn how to use the WordPress 'install_plugins_upload()' PHP function to display a form for uploading plugins from zipped files

​The `install_plugins_favorites_form()` is a WordPress function that allows you to display a username form for the favorites page, which can be useful for managing plugin settings

Learn how to use the WordPress 'install_dashboard()' PHP function to display the Featured tab of the Add Plugins screen in various scenarios with this article

Determines whether the current request is for a site’s administrative interface.