I'm currently working on a PHP project and have been reading about constants in PHP. While I understand the basic concept of constants - that they are like variables but cannot be changed once they are defined - I'm still a bit confused about their proper usage.
So, my question is: What are some good practices or guidelines for using constants in PHP? Are there any specific scenarios where using constants is more appropriate than using variables?
I would appreciate any insights or examples you can provide. Thanks in advance for your help!