Why your store’s PHP version matters (and how to check it)

Behind every WooCommerce store is software written in PHP. You don’t need to know how it works, but keeping it up to date is one of the simplest things you can do to keep your store fast, secure, and running smoothly.

Think of PHP like the engine in a car. Newer engines are more fuel-efficient and reliable. Older engines still work, but they’re harder to maintain and more vulnerable to problems. The same is true for PHP.

PHP is the programming language that powers WordPress and WooCommerce. When a customer visits your store, PHP is working behind the scenes to load your products, process orders, and display your pages.

You don’t interact with PHP directly — your hosting provider manages it for you. But the version of PHP that your site runs on can make a real difference to your store’s performance and security.

Security

Older PHP versions eventually stop receiving security updates (also known as patches). PHP 7.4, for example, reached its “end of life” in November 2022. That means any security vulnerabilities discovered since then haven’t been patched. Running an outdated version is a bit like leaving your store’s back door unlocked.

Speed

PHP 8.1+ is significantly faster than older versions. Faster page loads mean a better experience for your customers — and can even improve your search rankings.

Compatibility

As WooCommerce and WordPress continue to evolve, we optimize for newer PHP versions. Staying current means you’ll have access to the latest features and fewer compatibility headaches.

WordPress makes this easy with a built-in tool called Site Health. Here’s how to find it:

1. Log in to your WordPress dashboard.
2. Go to Tools → Site Health.
3. Click the Info tab.
4. Expand the Server section.
5. Look for the PHP version row.

If you’re running PHP 8.1 or higher, you’re in great shape. If you see PHP 7.4 or 8.0, it’s time to think about upgrading.

What to do if you’re on an older version

The good news: upgrading PHP is usually straightforward, and your hosting provider handles the technical work. Here’s what to do:

1. Contact your host 

Most hosting providers offer PHP version controls in their dashboard, or can upgrade you upon request. Look for a setting called “PHP version” or “PHP selector” in your hosting control panel, or reach out to their support team.

2. Choose the right version

We recommend PHP 8.3 for the best balance of performance, security, and compatibility. PHP 8.2 is also a solid choice. You might notice that PHP 8.3 is newer than PHP 8.2 — so why would someone choose 8.2? New PHP versions introduce improvements, but they can also include changes that take time for hosting platforms, plugins, and themes to fully adopt. That’s why many production sites run a version that’s widely tested and proven across the ecosystem, even when a newer version is available.

If you’re curious what’s changed between versions, the PHP project publishes detailed release notes for each version.

3. Test first if possible

Some hosts offer staging environments where you can test the upgrade before applying it to your live site. This is a good precaution, especially if you use a lot of plugins.

If you’re shopping for a new hosting provider — or evaluating whether your current one still meets your needs — PHP version support is worth checking. A good WooCommerce host should:

• Offer PHP 8.2 or 8.3 by default.
• Make it easy to switch PHP versions.
• Keep PHP updated automatically as new versions are released.

You can find our recommended hosts on the WooCommerce hosting page.

Checking your PHP version takes less than a minute, and upgrading is usually just a quick message to your host. It’s one of those small maintenance tasks that pays off in better security, faster performance, and peace of mind.

If you have questions about your store’s server setup, our support team is happy to point you in the right direction.

About

Brent MacKinnon

Brent MacKinnon is the director of product marketing and developer advocacy at WooCommerce, helping to make the platform better for developers and merchants alike. With over a decade of experience in product marketing and strategy, Brent is passionate about supporting the WooCommerce community and helping entrepreneurs of all kinds succeed with Woo.