How to update the PHP versions on the WordPress website

Keeping your WordPress website running on the latest supported PHP version is essential for maintaining performance, security, and compatibility. PHP 8.3 introduces several improvements over previous versions, including better speed, more robust typing, and enhanced error handling. However, if you need to update the PHP versions on the WordPress platform, it’s not just a click-and-go process.

You must plan carefully to ensure your website continues to function smoothly. This guide will walk you through the steps to safely upgrade your WordPress site to PHP 8.3. To update the PHP version of your WordPress website to PHP 8.3, follow these steps. The exact process depends on your hosting environment, but the general steps are outlined below:

Your website might alert you to update the PHP version. It indicates that the current PHP version is outdated. Follow the steps below.

✅ Step 1: Check WordPress Compatibility

Before updating PHP, ensure your WordPress version, theme, and plugins are compatible with PHP 8.3:

• Update WordPress to the latest version.
• Update all themes and plugins.
• Check for PHP 8.3 compatibility using the PHP Compatibility Checker plugin. Note: Some results may be inaccurate. Test in a staging site if possible.

✅ Step 2: Backup Your Website

Use a plugin like UpdraftPlus, All-in-One WP Migration, or your hosting provider’s tools to:

• Create a full backup of your website files and database.
• Download the backup for safekeeping.

✅ Step 3: Switch PHP Version Control Panel

💡 Common Hosting Panels:

cPanel:

1. Log in to cPanel.
2. Go to Select PHP Version or MultiPHP Manager.
3. Locate your domain.
4. Select PHP 8.3 from the dropdown.
5. Click Apply or Save.

When you have logged in to your hosting cPanel go down to Software and go to PHP MultiPHP Manager.

Then, select your website that you want to update the PHP version, go to the right side, choose the latest PHP version, and click Apply

Now the PHP version 8.3 is updated on my website, done. For other hosting, you can follow with steps below

Plesk:

1. Log in to Plesk.
2. Navigate to Websites & Domains > PHP Settings.
3. Choose PHP 8.3 from the PHP version dropdown.
4. Click Apply.

SiteGround:

1. Log in to Site Tools.
2. Go to Dev > PHP Manager.
3. Click Edit next to the domain.
4. Choose PHP 8.3 and click Confirm.

Bluehost, HostGator, GoDaddy, etc.:

• Use their respective PHP or Software Settings panel (search for “PHP Version”).
• Most provide a way to choose PHP 8.3 from a dropdown.

If unsure, contact your host’s support for assistance.

✅ Step 4: Test Your Website Thoroughly

After upgrading:

• Check your site on the front end.
• Test contact forms, shopping carts, and other dynamic features.
• Check the WordPress admin area for issues.

✅ Step 5: Fix Any Issues

If something breaks:

• Restore your backup.
• Test on a staging site first.
• Consider updating/replacing incompatible plugins.

⚙️ Optional: Use a Staging Site First

If your host supports staging (e.g., Kinsta, WP Engine, SiteGround). Clone your site to a staging environment, update PHP there, and test before applying to your live site.

Why Need to update PHP version on website?

1. Improved Performance

Newer versions of PHP are significantly faster and more efficient. PHP 8.3, for example, executes code faster than previous versions, which means:

• Quicker page load times
• Lower server resource usage
• Better handling of high traffic

Faster websites also contribute to better SEO and user experience.

2. Enhanced Security

Older PHP versions no longer receive security updates. Running an outdated PHP version exposes your website to:

• Vulnerabilities and exploits
• Malware attacks
• Compatibility issues with newer security practices

Updating to PHP 8.3 ensures you are using a version that’s actively maintained and secure.

3. Compatibility Latest WordPress Features

WordPress and many plugins/themes are built to work with newer PHP versions. Updating PHP ensures:

• Compatibility with the latest WordPress core releases
• Proper functioning of modern plugins and themes
• Fewer bugs or unexpected errors

4. Access to New Language Features

PHP 8.3 introduces:

• Enhanced type safety
• Improved error handling
• Cleaner syntax
• New functions and performance improvements

These features make development more robust and future-friendly, even if you’re not writing code yourself.

5. Compliance and Best Practices

Using up-to-date software is part of website maintenance best practices. Many hosting providers, developers, and security services require a modern PHP version to ensure:

• Regulatory compliance
• Compatibility with performance monitoring and caching tools
• Long-term stability

⚠️ What Happens If You Don’t Update?

• Your site may become slow and insecure.
• You might face plugin/theme compatibility issues.
• Hosting providers may eventually force an update or drop support.

Conclusion

Upgrading your website to PHP 8.3 is a proactive step toward improved speed, security, and long-term compatibility. Follow the proper update process by checking compatibility and backing up your site. Update via your hosting control panel, and thoroughly test afterward. This way, you can minimize potential issues and enjoy the benefits of a modern PHP environment.

If you’re unsure at any stage, consider testing in a staging environment or consulting with your hosting provider for guidance. Taking these precautions ensures your website remains reliable, secure, and optimized for the future.