Are there any best practices for handling HTML-formatted data in PHP applications?

When handling HTML-formatted data in PHP applications, it is important to properly sanitize and validate the input to prevent cross-site scripting (XSS) attacks. One best practice is to use functions like htmlentities() or htmlspecialchars() to escape any HTML tags in the input data before displaying it on a webpage. 

// Example of sanitizing HTML-formatted data in PHP
$input = "<script>alert('XSS attack!');</script>";
$clean_input = htmlspecialchars($input);

echo $clean_input;

Keywords

HTML data handling PHP applications security sanitization

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