How can PHP developers leverage libraries like HTMLPurifier to ensure the security and integrity of user-generated content in a web application?

User-generated content in a web application can pose security risks if not properly sanitized. PHP developers can leverage libraries like HTMLPurifier to sanitize and filter user input to prevent XSS attacks and other vulnerabilities. 

// Include HTMLPurifier library
require_once '/path/to/htmlpurifier/library/HTMLPurifier.auto.php';

// Create HTMLPurifier configuration
$config = HTMLPurifier_Config::createDefault();
$purifier = new HTMLPurifier($config);

// Sanitize user input
$clean_html = $purifier->purify($_POST['user_input']);

// Use $clean_html in your application to ensure security and integrity

Keywords

PHP HTMLPurifier security user-generated content web application

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