Are the reserved words case sensitive in PHP?

问题

Are the reserved words in PHP (final, public, function, etc) case-sensitive?

Would it be valid to write:

Final Public Function

回答1:

I've never had a problem with case-sensitivity as it relates to reserved words. Sometimes I capitalize them, sometimes I don't. Take a look at this list for examples of usage:

http://us.php.net/manual/en/reserved.keywords.php

来源：https://stackoverflow.com/questions/13143641/are-the-reserved-words-case-sensitive-in-php