wp_is_using_https() – Function | Developer.WordPress.org

Checks whether the website is using HTTPS.

Description

This is based on whether both the home and site URL are using HTTPS.

bool True if using HTTPS, false otherwise.

function wp_is_using_https() {
	if ( ! wp_is_home_url_using_https() ) {
		return false;
	}

	return wp_is_site_url_using_https();
}

Uses	Description
wp_is_home_url_using_https()`wp-includes/https-detection.php`	Checks whether the current site URL is using HTTPS.
wp_is_site_url_using_https()`wp-includes/https-detection.php`	Checks whether the current site’s URL where WordPress is stored is using HTTPS.

Used by	Description
wp_should_replace_insecure_home_url()`wp-includes/https-migration.php`	Checks whether WordPress should replace old HTTP URLs to the site with their HTTPS counterpart.
wp_update_urls_to_https()`wp-includes/https-migration.php`	Update the ‘home’ and ‘siteurl’ option to use the HTTPS variant of their URL.
WP_Site_Health::get_test_https_status()`wp-admin/includes/class-wp-site-health.php`	Tests if the site is serving content over HTTPS.

Version	Description
5.7.0	Introduced.