How can forum administrators prevent security vulnerabilities related to PHP usage in user-generated content?

To prevent security vulnerabilities related to PHP usage in user-generated content, forum administrators should sanitize and validate user input before executing any PHP code. This can help prevent malicious code injections or attacks. One way to achieve this is by using functions like htmlspecialchars() to escape special characters and prevent code execution. 

$user_input = $_POST['user_input'];
$clean_input = htmlspecialchars($user_input);
echo $clean_input;

Keywords

XSS SQL injection input validation escaping security measures

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