PHP, as a server-side scripting language, is widely used for web development. However, even seasoned developers can fall victim to common mistakes that can affect performance, security, and code maintainability. This article aims to highlight those pitfalls and offer guidance to php programmers on how to avoid them. Underestimating the Importance of Security One of the biggest mistakes a PHP developer can make is to treat security as an afterthought. Cross-site scripting (XSS), SQL injection, [...]