public static function get_http_response_code( $url ) {

		$curl = curl_init();
		curl_setopt_array(
			$curl,
			[
				CURLOPT_RETURNTRANSFER => true,
				CURLOPT_URL            => $url,
			]
		);
		curl_exec( $curl );
		$response_code = curl_getinfo( $curl, CURLINFO_HTTP_CODE );
		curl_close( $curl );

		return $response_code;
	}