wp-admin/includes/bookmark.php:16Adds a link using values provided in $_POST.
intfunction add_link() { return edit_link();}Introduced in 2.0.0. One change between 6.7.7 and 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
int|WP_Error to int.verified against sourcesrc/wp-admin/includes/bookmark.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.