Determines the difference between two timestamps.

Maps a capability to the primitive capabilities required of the given user to satisfy the capability being checked.

Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().

Downloads an image from the specified URL, saves it as an attachment, and optionally attaches it to a post.

Registers a new block style.

Registers a meta key.

Registers a post type.

Ensures request arguments are a request object (for consistency).

Given an array of fields to include in a response, some of which may be nested.fields, determine whether the provided field should be…

Validate a value based on a schema.