(Any Language) Common Regex

[minitech]

Everyone seems to be asking for these in the forum, so here are some common ones that will match anything valid.

E-mail:

^[a-zA-z0-9_\-\.]+@[a-zA-z0-9_\-\.]+?\.\w{2,4}$

URL:

^((http|ftp)s?://)?[a-zA-z0-9_\-\.]+?\.\w{2,3}(:\d{2,5})?(/[a-zA-z0-9_\-\.]*)*

Phone Number:

^(\d*(\-\s*)?)?((\(\d{3}\)\s*)|(\d{3}\s*(\-\s*)?))?\d{3}\s*(\-\s*)?\d{4}$

Image Source File (from HTML):

(?<=\<img\s.*?src=['"])[^"']+

IP Address with Optional Port Number:

(\d{1,3}\.){3}\d{1,3}(\:\d{1,5})?

New ones on request by PM or post.