How to Prevent XSS (Cross-Site Scripting) in PHP body{font-family:Arial,sans-serif;line-height:1.6;margin:0;padding:0 1rem;background:#f9f9f9;color:#333} h1,h2,h3{color:#2c3e50} source code{background:#eee;padding:2px 4px;border-radius:3px} pre{background:#eee;padding:1rem;overflow:auto;border-radius:5px} ul{margin-left:1.5rem} How to Prevent XSS (Cross-Site Scripting) in PHP Cross‑Site Scripting (XSS) remains one of the most common protection vulnerabilities in web applications. When an attacker injects malicious JavaScript into a page viewed by other users, they can steal cookies, hijack sessions, or manipulate the DOM. PHP developers have a toolbox of built‑in functions and leading‑practice patterns that can dramatically reduce the risk of XSS. 1. Understand the Types of XSS Stored XSS Malicious code is saved on the instance (e.g., in a storage engine) and rendered…
