wp-admin/includes/class-wp-site-health.php:1621Checks if the HTTP API can handle SSL/TLS requests.
array public function get_test_ssl_support() { $result = array( 'label' => '', 'status' => '', 'badge' => array( 'label' => __( 'Security' ), 'color' => 'blue', ), 'description' => sprintf( '<p>%s</p>', __( 'Securely communicating between servers are needed for transactions such as fetching files, conducting sales on store sites, and much more.' ) ), 'actions' => '', 'test' => 'ssl_support', ); $supports_https = wp_http_supports( array( 'ssl' ) ); if ( $supports_https ) { $result['status'] = 'good'; $result['label'] = __( 'Your site can communicate securely with other services' ); } else { $result['status'] = 'critical'; $result['label'] = __( 'Your site is unable to communicate securely with other services' ); $result['description'] .= sprintf( '<p>%s</p>', __( 'Talk to your web host about OpenSSL support for PHP.' ) ); } return $result; }Introduced in 5.2.0. 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-site-health.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.