wp_is_site_url_using_https()

wp_is_site_url_using_https(): bool

function wp_is_site_url_using_https() {
	/*
	 * Use direct option access for 'siteurl' and manually run the 'site_url'
	 * filter because `site_url()` will adjust the scheme based on what the
	 * current request is using.
	 */
	/** This filter is documented in wp-includes/link-template.php */
	$site_url = apply_filters( 'site_url', get_option( 'siteurl' ), '', null, null );

	return 'https' === wp_parse_url( $site_url, PHP_URL_SCHEME );
}