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  • The importance of keeping PHP up to date

    At Pedalo we largely work with Open-Source PHP based systems and tools and as such we keep an eye on the latest updates and changes in the PHP developer community. For website owners, maintaining a secure and high-performing site requires regular updates—not just for WordPress and Drupal, plugins, modules and themes, but also for the underlying server technologies, such as PHP. PHP is the programming language that powers over 75% of websites, including WordPress and Drupal, the two largest Open-Source CMS tools around. This means it is crucial to keep PHP updated. In this blog, we’ll explore why updating PHP is essential, the benefits of staying current, and potential issues that may arise if left outdated.

  • Why updating PHP matters

    1. Enhanced Security
      Older PHP versions no longer receive security patches, making them vulnerable to cyberattacks. Hackers actively exploit outdated software, and running an unsupported PHP version significantly increases the risk of breaches, malware infections, and data loss. Updating to the latest stable version ensures your website remains secure.
    2. Better Performance and Speed
      Each PHP release includes optimizations that improve website speed and efficiency. For example, PHP 8.0 introduced the JIT (Just-In-Time) compiler, which significantly enhances performance compared to PHP 7.4. A faster website leads to better user experience and improved SEO rankings.
    3. Improved Compatibility with WordPress plugins and Drupal modules
      WordPress and Drupal’s ecosystems of themes, plugins and modules continuously evolve, often requiring newer PHP versions to function correctly. Running an outdated PHP version may lead to compatibility issues, causing plugins, modules or themes to break, malfunction, or display errors.
    4. Access to New Features
      Each PHP update introduces new functions and syntax improvements that help developers write cleaner, more efficient code. This allows for better-optimised WordPress and Drupal themes, plugins and modules that take advantage of modern PHP capabilities.

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    Potential issues when updating PHP

    While upgrading PHP is necessary, there are some potential challenges to be aware of:

    1. Compatibility Issues
      Some older plugins, modules or themes may not be compatible with newer PHP versions, causing errors or crashes. Before updating, check if your WordPress or Drupal installation, themes, plugins and modules are compatible with the latest PHP release.
    2. Deprecated Functions and Code Conflicts
      Newer PHP versions may remove outdated functions that some plugins or themes still use. If your site relies on deprecated functions, updating PHP could lead to site-breaking errors.
    3. Potential Downtime if Not Handled Properly
      Updating PHP without testing can result in website downtime. That’s why it’s crucial to prepare properly before making the switch.
 
  • How to safely update PHP

    To ensure a smooth transition to a newer PHP version, follow these steps:

    1. Check Your Current PHP Version

    1. If you’re using WordPress log into your admin panel.
    2. Navigate to Tools > Site Health.
    3. Under the Info tab, find the PHP version in the Server
      Alternatively, and for Drupal users, you can check the PHP version via your hosting control panel (cPanel, Plesk, or custom dashboards).

    2. Create a Full Backup

    Before making any changes, create a full backup of your website, including files and databases. Use a WordPress plugin like UpdraftPlus or a Drupal module such as Backup and Migrate to store backups in a secure location (Google Drive, Dropbox, etc.).

    3. Test Compatibility

    1. Check your WordPress or Drupal sites theme, and plugin documentation to confirm compatibility with the latest PHP version.
    2. Use the PHP Compatibility Checker plugin to scan your site for potential issues.
    3. If you’re unsure, set up a staging site to test the PHP update without affecting your live website.

    4. Update PHP via Hosting Control Panel

    Depending on your hosting provider, the steps may vary:

    For cPanel:

    1. Log into cPanel.
    2. Navigate to Select PHP Version under Software.
    3. Choose the latest stable PHP version and save changes.

    For Plesk:

    1. Log into Plesk.
    2. Go to Domains > PHP Settings.
    3. Select the latest PHP version and apply changes.

    5. Test Your Website

    After updating PHP, thoroughly test your website:

    1. Navigate through different pages.
    2. Check key functionalities like forms, shopping carts, and login features.
    3. Look for errors in the WordPress or Drupal admin panel.

    6. Monitor for Issues and Roll Back if Needed

    If you experience major issues, you can revert to the previous PHP version via your hosting panel. Investigate errors, update outdated plugins or themes, and try again.

 
  • In conclusion

    Keeping PHP up to date is a fundamental aspect of website maintenance. Regular updates improve security, enhance performance, and ensure compatibility with the latest WordPress and Drupal features. By following a structured update process—including backups, compatibility checks, and testing—website owners can safely upgrade PHP without unexpected issues. Don’t wait until an outdated PHP version causes problems—take proactive steps today to keep your website secure and optimised!

     

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