What are the benefits of using iframes in PHP development, and how can they be implemented effectively?

Using iframes in PHP development can be beneficial for embedding external content or applications within a webpage. This can help streamline the development process by allowing for modular and reusable components. To implement iframes effectively, ensure that the source URL is secure and trusted to prevent security vulnerabilities.

<iframe src="https://www.example.com" width="100%" height="500"></iframe>