Everyone knows that using the latest software is good for your website's security and performance, while outdated code is not. But everyone would be concerned if I were to propose that simply updating your PHP version is dangerous and staying on an old one is safe. I could prove my thesis making use of a few additional rules, such as postulating that some older versions, PHP 7.4 for instance, should not be counted as outdated if your theme and plugins still support it. The reality is that keeping your site's core technology current is a nuanced but essential part of managing your WordPress site's overall health.
How to Update Your PHP Version: A Step-by-Step Guide
Updating your PHP version might sound technical, but it's a straightforward process that can significantly boost your site's speed and security. Before you begin, the golden rule is to always create a full backup of your website. This is your safety net. Once that's secured, you can proceed with confidence. Here is a clear, step-by-step method to get your site running on a newer, better PHP version.
- Step 1: Check Your Current PHP Version
First, you need to know what you're currently running. You can find this information in your WordPress admin dashboard under Tools > Site Health > Info, or by checking your hosting control panel (like cPanel). Make a note of the current version. - Step 2: Check Theme and Plugin Compatibility
This is the most critical step. Visit your hosting provider's dashboard or use a plugin to check if your active theme and all installed plugins are compatible with the PHP version you want to upgrade to. Incompatible items can cause your site to break, displaying a "white screen of death" or errors. - Step 3: Create a Staging Site (Highly Recommended)
If your host offers a staging environment, use it. A staging site is a clone of your live site where you can test the PHP update without affecting your visitors. This is the best way to catch and fix any compatibility issues. - Step 4: Update PHP via Your Hosting Control Panel
Log into your web hosting account. Navigate to the section for managing PHP, often called "PHP Selector" or "MultiPHP Manager". Select your website's domain or directory, choose a newer PHP version from the dropdown list (like PHP 8.0 or 8.1), and save the changes. - Step 5: Thoroughly Test Your Live Site
After updating, immediately visit your live website. Check the front-end pages, try logging into your admin area, test contact forms, and ensure any interactive features like a music player are working correctly. If something is broken, you may need to temporarily switch to a default theme or deactivate plugins to find the culprit.
What happens if I update PHP and my site breaks?
If your site breaks after a PHP update, don't panic. The most common cause is a theme or plugin that isn't compatible with the new PHP version. You will likely see a critical error or a blank white screen. The fastest fix is to revert to the old PHP version immediately through your hosting control panel to restore site access.
Once your site is back online, you need to diagnose the problem. Enable WordPress debugging by adding a few lines to your wp-config.php file. This will display specific error messages instead of a blank screen, pointing you to the faulty plugin or theme. You can then update that software, seek an alternative, or contact its developer for support before attempting the PHP upgrade again.
How often should I update my PHP version?
PHP has a structured release cycle, with active support for each version lasting about two years, followed by an additional year of security fixes. You should aim to use a version that is still receiving security updates. Ideally, plan to review your PHP version at least once every six months to ensure you are not running an outdated, unsupported version that poses a security risk.
Staying on a supported version is a key part of ongoing WordPress maintenance, which includes keeping your theme updated. While you don't need to jump to every single new release the day it comes out, you should not linger on versions that have reached their "end of life." Your hosting provider can often notify you when your current version is nearing its end of support.
What are the benefits of updating PHP?
Updating PHP offers substantial, tangible benefits. The most important is enhanced security. Newer versions patch known vulnerabilities that hackers can exploit. Running an old PHP version is one of the biggest security risks for a WordPress site. Each update makes your site's foundation more secure against attacks.
Beyond security, you will see a clear performance boost. Newer PHP versions are engineered to execute code much faster. This means your web pages will load quicker, improving user experience and potentially helping your search engine rankings. It also allows your server to handle more traffic without slowing down, making your site more efficient overall.
Can I update PHP myself, or do I need a developer?
Many website owners can update PHP themselves, especially with modern hosting control panels that make it a simple one-click change. The process itself is quick. The real work is in the preparation: checking compatibility and creating backups. If you are comfortable accessing your hosting dashboard and following clear steps, you can likely do it.
However, if your site is complex, has many custom features, or you simply don't have the time to test thoroughly, hiring a professional is a wise investment. A developer can handle the update on a local development environment first, fix any compatibility issues, and ensure a smooth transition with zero downtime for your visitors, giving you complete peace of mind.
How do I check which PHP version my WordPress site is using?
There are several easy ways to check your current PHP version. The simplest is within your WordPress admin area. Go to Tools > Site Health and click on the "Info" tab. Under the "Server" section, you'll see your PHP version listed. This tool also provides other useful health information about your installation.
Alternatively, you can check through your web hosting provider. Log into your cPanel, Plesk, or custom hosting dashboard and look for a section labeled "PHP" or "Software". Many hosts also display the PHP version in the account overview. You can also use a free plugin that displays system information in your admin bar or dashboard, keeping you informed at a glance.
What's the difference between major and minor PHP updates?
Understanding the difference between major and minor updates is key. A major update (e.g., from PHP 7.4 to 8.0) often includes significant changes that can break compatibility with older code. These updates introduce new features, deprecate old functions, and change how some things work. They require thorough testing of your entire site.
| Update Type | Version Example | Risk Level | Action Required |
|---|---|---|---|
| Major Update | 7.4 → 8.0 | High | Full compatibility testing required |
| Minor Update | 8.0.1 → 8.0.2 | Low | Usually safe to apply promptly |
A minor update (e.g., from PHP 8.0.1 to 8.0.2) is typically a security or bug-fix release. These updates are generally safe to apply as soon as possible, as they patch vulnerabilities without changing the core functionality. They are crucial for maintaining security and should rarely cause issues with your WordPress site.
Professional WordPress Care with WPutopia
Keeping your website's technology stack updated, from PHP to plugins, is vital but can be time-consuming. At WPutopia, we handle these technical details for you. Our WordPress maintenance services include proactive PHP version updates, theme and plugin management, security monitoring, and performance optimization, ensuring your site remains secure, fast, and reliable. Let us handle the backend work so you can focus on your content and business, knowing your site's foundation is solid and expertly maintained. This comprehensive care even extends to helping you manage and customize dynamic elements like your page titles for better SEO and user experience.
