Function: Cleans up an array, comma- or space-separated list of integer values.

Function: Cleans up an array, comma- or space-separated list of scalar values.

Function: Parses an array, comma- or space-separated list of post ids and urls.

Function: Sanitizes a slug

Function: Checks whether an optin form should be displayed.

Function: Checks whether we should verify nonces when processing subscription forms.

Function: Schedule an action to run once at some defined point in the future.

Function: Schedule an action to run repeatedly with a specified interval in seconds.

Function: Updates a single option

Function: Updates noptin options