Nhờ trợ giúp Notice trên Wordpress update PHP

Xin chào mọi người. Mấy ngày nay mình thấy trên dashboard trang web của mình có xuất hiện dòng thông báo này. Mình không biết nên làm gì. Nhờ mọi người giúp đỡ ạ. Xin cám ơn.

Đây là thông báo:

"
Your site could be faster and more secure with a newer PHP version.

Hey, we've noticed that you're running an outdated version of PHP. PHP is the programming language that WordPress and Yoast SEO are built on. The version that is currently used for your site is no longer supported. Newer versions of PHP are both faster and more secure. In fact, your version of PHP no longer receives security updates, which is why we're sending you to this notice.

Hosts have the ability to update your PHP version, but sometimes they don't dare to do that because they're afraid they'll break your site.

To which version should I update?

You should update your PHP version to either 5.6 or to 7.0 or 7.1. On a normal WordPress site, switching to PHP 5.6 should never cause issues. We would however actually recommend you switch to PHP7. There are some plugins that are not ready for PHP7 though, so do some testing first. We have an article on how to test whether that's an option for you here. PHP7 is much faster than PHP 5.6. It's also the only PHP version still in active development and therefore the better option for your site in the long run.

Can't update? Ask your host!

If you cannot upgrade your PHP version yourself, you can send an email to your host. We have examples here. If they don't want to upgrade your PHP version, we would suggest you switch hosts. Have a look at one of our recommended WordPress hosting partners, they've all been vetted by our Yoast support team and provide all the features a modern host should provide."