isset(var), defined(const), ???????(function)

[email protected] (Angus Mackay)
Newsgroups php.general
Message-ID <[email protected]> 
how do I check if a function is defined?

I tried both isset() and empty() and neither of them worked. I sure hope that
php3 has this facility considering that if you require a file that defines
a function in it twice it is an error.

I mean even tcl has this ability.

cheers, Angus.
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.