What are some best practices for administration and user management in PHP-based systems?

Issue: Best practices for administration and user management in PHP-based systems include using secure password hashing, implementing role-based access control, validating user input to prevent SQL injection and cross-site scripting attacks, and regularly updating and maintaining the system to patch security vulnerabilities. Code snippet: 

// Secure password hashing
$password = 'password123';
$hashed_password = password_hash($password, PASSWORD_DEFAULT);

// Role-based access control
$user_role = 'admin';
if($user_role == 'admin'){
    // Admin functionality
} else {
    // User functionality
}

// Validating user input
$username = $_POST['username'];
$username = mysqli_real_escape_string($conn, $username);

// Regularly updating and maintaining the system
// Update system regularly to patch security vulnerabilities

Keywords

authentication authorization user roles session management password hashing

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