string $to_ping )
Filters the list of URLs yet to ping for the given post.
(string) List of URLs yet to ping.
- Callback functions applied to this filter should not ping the URLs. Instead, they may modify the array of URLs to be pinged, and WordPress will ping them automatically.
- Note that each of the filter callback functions must return an array of URLs after it is finished processing. Otherwise, any code using the
$to_pingarray will break and other plugins also filtering the
$to_pingarray may generate errors.