No subject

method is quoted (like in 2) or not (like in 1). But maybe there is a
non-obvious difference, something like "without quotes results in a
case-insensitive compare, but it works only for the methods defined in
RFCxyz"?

is_method() used in 3. certainly is more powerful as it allows to test fo=
r
multiple methods per call (using: ...
is_method("PUBLISH|MESSAGE|SUBSCRIBE") ...), but how does it perform
compared to the statements used in 1. and 2. for a single comparison?

Last but not least, is it worth at all to worry about these kind of
questions? :-)

Bye, Mike