PHP is a widely used programming language for web development and is a key component of many web applications. However; it is important to consider security when working with PHP to ensure that your web applications are protected against potential threats. In this article, we will explore some best practices for securing your PHP-based web applications, including input validation, using prepared statements, enabling HTTPS, keeping your PHP installation up to date, using a web application firewall, and practicing good security hygiene. By following these best practices and considering additional considerations such as using a CMS or framework with built in security measures, using a password manager, and using security plugins or extensions, you can ensure that your PHP based web application is secure and protected against potential threats.