What are the best practices for handling user permissions and ownership in PHP scripts?

When handling user permissions and ownership in PHP scripts, it is important to ensure that only authorized users have access to certain resources or actions. This can be achieved by implementing role-based access control, where users are assigned specific roles with corresponding permissions. Additionally, it is crucial to validate user input to prevent unauthorized access or injection attacks. 

// Example of role-based access control in PHP
$userRole = 'admin';

if($userRole == 'admin'){
    // Allow access to admin-only resources
    echo "Welcome, Admin!";
} else {
    // Deny access to unauthorized users
    echo "Access denied.";
}

Keywords

authentication authorization ACL ownership user management

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