Determines whether the user exists in the database.

Sets the site to operate on. Defaults to the current site.

Sets the site to operate on. Defaults to the current site.

Retrieves the value of a property or meta key.

Gets the available user capabilities data.

Returns only the main user fields.

Retrieves all of the capabilities of the user’s roles, and merges them with individual user capabilities.

Gets the ID of the site for which the user’s capabilities are currently initialized.

Returns whether the user has the specified capability.

Determines whether a property or meta key is set.