Question

can somebody point me to a good regular expression resource (for php if it matters).
I am looking now for a book here amazon but don’t know which one is better. It would be great to find something simple to understand and a fast and interesting process of learning.

Answer 1

You can start at http://www.regular-expressions.info/

The site also has a list of regular expressions books.

PHP supports several regular expressions variants, but the most important is PCRE (perl-comptabible regular expressions).

The mb_ereg family, besides supporting several encodings, also supports several variants:

j   Java (Sun java.util.regex)
u   GNU regex
g   grep
c   Emacs
r   Ruby
z   Perl
b   POSIX Basic regex
d   POSIX Extended regex