What is the difference between a link and a URL in PHP?

In PHP, a link is a clickable element on a webpage that directs the user to another page or resource. A URL, on the other hand, is the specific address that identifies the location of a resource on the internet. When creating a link in PHP, you use the anchor tag <a> along with the href attribute to specify the URL that the link should point to.

// Example of creating a link in PHP
echo '<a href="https://www.example.com">Click here</a>';