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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} 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 security 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 best‑practice patterns that can dramatically reduce the risk of XSS. 1.
Understand the Types of XSS Stored XSS Malicious code is saved on the server (e.g.
, in a database) and rendered..
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