What security considerations should be taken into account when using PHP to load websites from the internet?

When using PHP to load websites from the internet, it is important to consider security risks such as remote code execution, cross-site scripting, and injection attacks. To mitigate these risks, always validate and sanitize user input, use secure coding practices, and avoid executing code from untrusted sources.

// Example code snippet to load a website securely using PHP
$url = "https://example.com";
$website_content = file_get_contents($url);

// Sanitize and validate the website content before displaying it
echo htmlspecialchars($website_content);