I'm fairly new to PHP and I've been trying to understand the concept of resources in PHP. I've come across this term multiple times while going through some PHP documentation and tutorials, and I'm a bit confused about its usage and purpose.
As far as I understand, a resource in PHP is a special variable that holds a reference to an external resource, such as a database connection, a file handle, or an image. I've seen functions like fopen() and database connection functions return a resource, but I'm not entirely sure what I can do with it or how I can interact with it further.
So, can anyone shed some light on the usage of resources in PHP? What are some common scenarios where resources are used? And how do I effectively work with them? Some code examples or recommended resources to read would be greatly appreciated.
Thanks in advance!