SniffResponse is a server-side Web browser sniffer
PHP class which categorizes browsers into four
groups: not OK, just OK, modern, and unknown.
Browser name and version can also be extracted.
SniffResponse makes it simple to write PHP scripts
which respond according to the standards supported
by the browser. For example, it could serve up a
warning or pass crude but safe HTML. The default
thresholds for the different levels can be