If you are unsure which version corresponds to which PHP build, you can usually tell by the folder name. For example:
The primary motivation for seeking an older XAMPP version is typically anchored in PHP version requirements. As PHP evolves, older functions are deprecated and eventually removed. Developers working on legacy applications that rely on these outdated features often find that the newest XAMPP releases, which bundle the latest PHP versions, break their code. Consequently, downloading a specific older version becomes the most efficient way to mirror a production environment or to keep a decades-old project operational during local testing.
Running older software comes with risks. Before you install an older version of XAMPP, keep the following in mind:
Always check the PHP version bundled with the installer; the XAMPP version number typically mirrors the PHP version it contains (e.g., XAMPP 7.4.x includes PHP 7.4).