how do I use the grep --include option for multiple file types?

Question

When I want to grep all the html files in some directory, I do the following

grep --include=\"*.html\" pattern -R /some/path

which works well. T

Answer 1

It works for the same purpose, but without --include option. It works on grep 2.5.1 as well.

grep -v -E ".*\.(html|htm|php)"