Converts a value to non-negative integer.
Attempts activation of plugin in a “sandbox” and redirects on success.
Activates multiple plugins.
Deprecated functionality for activating a network-only plugin.
Adds slashes to a string or recursively adds slashes to strings within an array.
Adds slashes only if the provided value is a string.
Adds a callback function to an action hook.
Adds an array of options to the list of allowed options.
Adds a new option for a given blog ID.
Adds an index to a specified table.
Adds a submenu page to the Comments main menu.
Adds meta data field to a comment.
Add contextual help text for a page.
Add callbacks for background image display.
Add callbacks for image header display.
Adds a submenu page to the Dashboard main menu.
Adds callback for custom TinyMCE editor stylesheets.
Adds a user to a blog based on details from maybe_add_existing_user_to_blog().
Adds a new feed type like /atom1/.
Adds a callback function to a filter hook.
Registers a new image size.
Adds a link using values provided in $_POST.
Adds a submenu page to the Links main menu.
Walks the array while sanitizing the contents.
Adds a submenu page to the Tools main menu.
Adds a submenu page to the Media main menu.
Adds a top-level menu page.
Adds post meta data defined in the `$_POST` superglobal for a post with given ID.
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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/