What are some common methods to bypass access restrictions on websites in PHP?

One common method to bypass access restrictions on websites in PHP is to use session management to control user access. By implementing a login system that assigns different user roles (such as admin, user, guest) and checking the user's role before allowing access to certain pages or functionalities, you can effectively restrict access to unauthorized users. 

session_start();

// Check if user is logged in and their role
if(isset($_SESSION['user_role']) && $_SESSION['user_role'] == 'admin'){
    // Allow access to restricted content
} else {
    // Redirect to login page or display error message
}

Keywords

SQL injection Cross-site scripting (XSS) Session hijacking CSRF (Cross-Site Request Forgery) Authentication vulnerabilities

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