Core class used for interacting with a multisite network.
WP_Date_Query
Class for generating SQL clauses that filter a primary query according to date.
WP_Block_Styles_Registry
Class used for interacting with block styles.
WP_Privacy_Data_Removal_Requests_List_Table
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WP_Privacy_Data_Export_Requests_List_Table
WP_Network_Query
Core class used for querying networks.
WP_Metadata_Lazyloader
Core class used for lazy-loading object metadata.
WP_Meta_Query
Core class used to implement meta queries for the Meta API.
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WP_MatchesMapRegex
Helper class to remove the need to use eval to replace $matches[] in query strings.
WP_Locale
Core class used to store translated data for a locale.
WP_Locale_Switcher
Core class used for switching locales.
WP_List_Util
List utility.
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WP_Image_Editor
Base image editor class from which implementations extend
WP_Image_Editor_Imagick
WordPress Image Editor Class for Image Manipulation through Imagick PHP Module
WP_Image_Editor_GD
WordPress Image Editor Class for Image Manipulation through GD