Core class used to implement a Meta widget.
WP_Widget_Media
Core class that implements a media widget.
WP_Widget_Media_Video
Core class that implements a video widget.
WP_Widget_Media_Image
Core class that implements an image widget.
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WP_Widget_Media_Gallery
Core class that implements a gallery widget.
WP_Widget_Media_Audio
Core class that implements an audio widget.
WP_Widget_Links
Core class used to implement a Links widget.
WP_Widget_Custom_HTML
Core class used to implement a Custom HTML widget.
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WP_Widget_Categories
Core class used to implement a Categories widget.
WP_Widget_Calendar
Core class used to implement the Calendar widget.
WP_Widget_Archives
Core class used to implement the Archives widget.
WP_Nav_Menu_Widget
Core class used to implement the Navigation Menu widget.
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wp_is_mobile
Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
wp_get_user_request
Return the user request object for the specified request ID.
wp_validate_user_request_key
Validate a user request by comparing the key with the request’s key.
