apply_filters( 'sanitize_trackback_urls', string $urls_to_ping, string $to_ping )

5760	 *5761	 * @since 3.4.05762	 *5763	 * @param string $urls_to_ping Sanitized space or carriage return separated URLs.5764	 * @param string $to_ping      Space or carriage return separated URLs before sanitization.5765	 */5766	return apply_filters( 'sanitize_trackback_urls', $urls_to_ping, $to_ping );5767}5768 5769/**5770 * Adds slashes to a string or recursively adds slashes to strings within an array.5771 *5772 * This should be used when preparing data for core API that expects slashed data.