[xctong]
zend/tips:
http://www.zend.com/tips/tips.php?
cpcw网站学习中心:
http://netschool.cpcw.com/homepage/cgi/perl/perlstep5.html
正規表示式的入門與應用:
http://main.rtfiber.com.tw/~changyj/regex.1/
[何志强]
posix basic regular expressions:
http://www.delorie.com/gnu/docs/rx/rx_3.html
regex edition 0.12a:
http://www.cs.utah.edu/dept/old/texinfo/regex/regex_toc.html
weberdev:
http://www.weberdev.com/