What are the potential pitfalls of using outdated versions of PHP and MySQL?

Using outdated versions of PHP and MySQL can pose security risks as they may contain vulnerabilities that have been patched in newer versions. Additionally, using outdated versions can lead to compatibility issues with newer technologies and frameworks, potentially hindering the performance and functionality of your application. To mitigate these risks, it is important to regularly update both PHP and MySQL to the latest stable versions.

// Check PHP version and display warning if outdated
if (version_compare(PHP_VERSION, '7.4.0') < 0) {
    echo "Warning: You are using an outdated version of PHP. Please update to at least PHP 7.4.0 for security and performance reasons.";
}