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Updating your PHP version is more crucial than you think

Stay Ahead of the Curve: Why Updating Your PHP Version is Essential

PHP, a cornerstone in the world of web development, powers a significant portion of the internet today. Renowned for its flexibility and ease of use, PHP is the backbone behind countless websites, from small blogs to large-scale commercial platforms.

However, despite its widespread adoption, there’s a common trend of hesitancy or neglect when it comes to updating PHP versions. This neglect can leave websites vulnerable and inefficient, hindering their potential in today’s rapidly evolving digital landscape.

In this blog, we’ll delve into why keeping your PHP version up to date is not just a technical necessity, but a critical component of your website’s health and success. We’ll explore the risks associated with outdated PHP versions, the tangible benefits of staying current, and provide insights into the upgrade process.

Whether you’re a business owner, a web developer, or just someone curious about the inner workings of web technologies, understanding the importance of PHP updates is crucial in maintaining a secure, efficient, and competitive online presence.

Stay tuned as we uncover the hidden dangers of outdated PHP and the compelling reasons to embrace the latest updates in this essential aspect of web development.

The Risks of Outdated PHP Versions

Security Vulnerabilities

Outdated versions of PHP pose a significant security risk due to the lack of critical updates and patches, making websites using them vulnerable to cyber attacks. These vulnerabilities are especially dangerous as they often remain unpatched in older PHP versions, leaving websites open to various security risks like data breaches and unauthorized access.

A compelling illustration of these risks is seen in the vulnerabilities found in various PHP scripts and applications. For instance, detailed information on various vulnerabilities specific to different PHP versions can be found on CVE Details, a comprehensive database of publicly known cybersecurity vulnerabilities.

These vulnerabilities are alarming because they offer avenues for attackers to exploit weaknesses in PHP versions that are no longer supported or updated. Such vulnerabilities can lead to severe security breaches, including unauthorized access to sensitive data, website defacement, and even complete control over the affected web server.

This scenario underscores the critical need for regular updates and maintenance of web software. Using outdated versions of PHP not only compromises the security of a website but also puts its users at risk. It highlights the importance of staying informed about the latest security patches and updates for PHP and ensuring that web applications are always running on supported versions of the language.

Performance Setbacks

The impact of the PHP version on a website’s performance is a critical factor in the overall user experience and efficiency of the site. A more recent version of PHP can significantly enhance website speed, leading to quicker load times and a more responsive interaction for users. This enhancement is not just about improving user satisfaction; it also has practical implications for server efficiency.

Upgrading PHP versions can lead to a reduction in server load. This efficiency gain means that your server can handle more requests with the same resources, or the same number of requests with less strain, potentially leading to cost savings in server infrastructure and maintenance.

Furthermore, with each new release, PHP incorporates improvements and optimizations that can help secure your website against vulnerabilities and ensure it stays compatible with modern web technologies and standards.

While the exact performance gains can vary based on specific configurations and use cases, the general trend is clear: keeping your PHP version up to date is crucial for maintaining an efficient, secure, and high-performing website.

Benefits of Updating PHP

Enhanced Security

Updating to the latest PHP version, currently PHP 8.2, brings significant security improvements. Each new release of PHP includes patches for vulnerabilities discovered in previous versions. This continuous enhancement in security measures helps protect websites from emerging cyber threats.

For instance, PHP 8.2 introduces several security improvements, including readonly classes, DNF types, null, false, and true types, and sensitive parameter redaction support. These features enhance the security of PHP applications by providing more robust data handling and access control mechanisms.

Improved Performance and Speed

One of the most notable benefits of updating to the latest PHP version is the improvement in performance and speed. PHP 8.0, for example, offers optimized performance through various enhancements such as JIT (Just-In-Time) compilation and improvements in the handling of arrays and strings.

These improvements result in faster script execution, which translates to quicker page load times and a more responsive user experience on websites.

Access to New Features

Each update of PHP introduces new features and functionalities that are not available in older versions. For PHP 8.2, features like readonly classes and a new random extension have been added.

The upcoming PHP 8.3, planned for release in November 2023, is expected to introduce additional features such as randomizer add-ons, json_validate, and improved error handling for unserialize() function.

These new features provide developers with more tools and options for building robust, efficient, and modern web applications.

Better Compatibility

With each new PHP version, there is also an improvement in compatibility with other modern web technologies and tools. This compatibility is crucial for integrating various services and APIs, as well as for ensuring that PHP applications can run efficiently on modern server environments.

By staying up-to-date with PHP versions, developers ensure that their applications are compatible with the latest technologies, frameworks, and standards, thus future-proofing their web applications against technological obsolescence.

Overcoming the Challenges of Updating

Identifying the Current PHP Version

Knowing the exact PHP version your website is running is the first critical step in the update process. Identifying the current PHP version helps in understanding the extent of the update required and preparing for any compatibility issues. Here’s a guide on how to check the PHP version of a website:

  1. Through the Hosting Control Panel
    • Most web hosting services provide a control panel (like cPanel) where you can find the PHP version.
    • Navigate to the section labeled ‘Software‘ and click on ‘Select PHP Version‘.
      cPanel Select PHP Version
    • Here, you will typically find the PHP version displayed along with options to change it.
      Current PHP Version
  2. Using a PHP Info File
    • Create a new text file and name it phpinfo.php (or a similar name).
    • Inside this file, write the following PHP code: <?php phpinfo(); ?>.
    • Upload this file to the public_html directory of your website using an FTP client or file manager provided by your hosting service.
    • Visit in your web browser (replace with your actual domain name).
    • This page will display a wealth of information about the PHP environment, including the current version.
      phpinfo file PHP version
  3. Via the Command Line (for VPS/Dedicated Servers)
    • If you have shell access to your server (common in VPS or dedicated hosting environments), you can check the PHP version via command line.
    • Connect to your server using SSH.
    • Once connected, enter the command: php -v.
    • This will display the PHP version installed on the server.
      php -v
      PHP 8.1.2-1ubuntu2.14 (cli) (built: Aug 18 2023 11:41:11) (NTS)
      Copyright (c) The PHP Group
  4. Through a CMS (like WordPress, Joomla, etc.)
    • Many content management systems (CMS) provide information about the server environment, including the PHP version.
    • In WordPress, for example, you can find this information under ‘Tools‘ → ‘Site Health‘ → ‘Info‘ → ‘Server‘.
      PHP version in WordPress

Planning the Update

  1. Evaluate and Plan
    • Assess the scope of the update, including any dependencies your website has on the current PHP version.
    • Plan for the update during a low-traffic period to minimize the impact on users.
  2. Check Compatibility
    • Review your website’s codebase for deprecated functions or features that may not be compatible with the new PHP version.
    • Check compatibility of plugins, themes, and third-party integrations.
  3. Create a Backup
    • Before making any changes, back up your entire website, including databases, to safeguard against potential data loss.
  4. Update in a Staging Environment
    • Perform the update on a staging site first. This is a clone of your live site where you can test changes without affecting your live website.
    • Update the PHP version on the staging site and monitor for any issues.
  5. Resolve Backward Compatibility Issues
    • Address any compatibility issues identified during staging. This may involve updating code, plugins, or themes.
    • Ensure all functionalities work as expected in the new PHP environment.
  6. Prepare for Rollback
    • In case the update causes unforeseen issues, be prepared to revert to the older version quickly.

Testing and Deployment

  1. Thorough Testing
    • Test all aspects of your website in the staging environment, including forms, login/logout functionalities, page loading times, and user interactions.
    • Pay special attention to custom-coded areas and features that heavily rely on PHP.
  2. Seek Feedback
    • If possible, have real users test the staging site and provide feedback on any issues or performance changes.
  3. Monitor Error Logs
    • Check PHP error logs for warnings or errors that could indicate problems.
  4. Deployment Planning
    • Schedule the deployment during off-peak hours to minimize the impact on your users.
  5. Update the Live Site
    • Once testing is complete and all issues are resolved, update the PHP version on the live site.
    • Implement the update either through the hosting control panel or via command line, depending on your hosting setup.
  6. Post-Deployment Monitoring
    • Closely monitor the website after the update for any issues.
    • Keep an eye on the performance metrics and user feedback to ensure everything runs smoothly.
  7. Communicate with Users
    • Inform your users about the update, especially if they might experience any temporary issues or changes in website behavior.

By following these steps for planning the update and ensuring thorough testing and careful deployment, you can transition to a newer PHP version smoothly, while minimizing disruption and maintaining the integrity of your website.


As we’ve explored throughout this blog, keeping your PHP version up-to-date is more than a mere technical formality—it’s a crucial strategy for ensuring the security, performance, and overall health of your website.

Outdated PHP versions expose your site to significant security risks and performance inefficiencies, while updating to the latest version can bring about enhanced security, improved performance, access to new features, and better compatibility with modern web technologies.

The journey to update PHP might seem daunting, especially considering the need for thorough planning, compatibility checks, and testing. However, the benefits of staying current with PHP updates far outweigh the initial efforts.

By upgrading, you not only protect your website from potential vulnerabilities but also ensure it runs efficiently, providing a better experience for your users and potentially improving your search engine rankings.

We encourage all website owners, developers, and administrators to take this call to action seriously. Evaluate your current PHP version, plan for an update, and execute it with the necessary precautions. Remember, an updated PHP version is not just about keeping up with technological advancements; it’s about securing your digital footprint and ensuring the best possible performance for your website.

In conclusion, regularly updating your PHP version is an essential practice in today’s digital world. It’s not just about maintaining your website; it’s about advancing it, safeguarding it, and optimizing it for the future. Take the step today to update your PHP version and set your website up for continued success.

The Author

Lindy dB.

Lindy brings over 7 years of experience in SEO, web development, UI/UX design, and marketing to the table, with a special focus on the hosting industry. When not geeking out over the latest digital trends, you can find Lindy buried in a good book or exploring worlds in video games.

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