wp-admin/includes/class-wp-automatic-updater.php:312Notifies an administrator of a core update.
$itemobjectboolOne hook fires while WP_Automatic_Updater::send_core_update_notification_email() runs, in this order:
Filters whether to notify the site administrator of a new core update.
protected function send_core_update_notification_email( $item ) { $notified = get_site_option( 'auto_core_update_notified' ); // Don't notify if we've already notified the same email address of the same version. if ( $notified && get_site_option( 'admin_email' ) === $notified['email'] && $notified['version'] === $item->current ) { return false; } // See if we need to notify users of a core update. $notify = ! empty( $item->notify_email ); /** * Filters whether to notify the site administrator of a new core update. * * By default, administrators are notified when the update offer received * from WordPress.org sets a particular flag. This allows some discretion * in if and when to notify. * * This filter is only evaluated once per release. If the same email address * was already notified of the same new version, WordPress won't repeatedly * email the administrator. * * This filter is also used on about.php to check if a plugin has disabled * these notifications. * * @since 3.7.0 * * @param bool $notify Whether the site administrator is notified. * @param object $item The update offer. */ if ( ! apply_filters( 'send_core_update_notification_email', $notify, $item ) ) { return false; } $this->send_email( 'manual', $item ); return true; }Introduced in 3.7.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-wp-automatic-updater.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.