In what situations should PHP developers seek permission from website owners before accessing and displaying their content, especially when dealing with special characters like Umlauts?

// Example code to request permission before accessing and displaying website content with special characters like Umlauts
$website_url = "https://www.example.com/content";
$website_content = file_get_contents($website_url);

// Check if permission is granted
$permission_granted = check_permission_from_website_owner($website_url);

if ($permission_granted) {
    // Display the website content with special characters like Umlauts
    echo $website_content;
} else {
    echo "Permission denied to access and display content.";
}

function check_permission_from_website_owner($website_url) {
    // Implement logic to check if permission is granted from website owner
    // This could involve sending a request to the website owner or checking a database of approved websites
    return true; // Return true if permission is granted, false if not
}