PHP class names are case insensitive

In writing a website, all API controllers return JSON data, but each time new Responsejson () is troublesome, define a Apicontroller class and let each Apicontroller extends Apicontroller. But the IDE will prompt ' should extends itself ', nginx error log hint ' can not redeclear class xxx '.

Just guessed that the class name is not case-sensitive.

Always for the convenience of all remember what is case-sensitive, it seems that there is a need to carefully remember.

Found this piece of information organized very well, thank the author, The Good Life of peace.

PHP class names are case insensitive