I use this to extract and later calculate the difference between two times.

Simple file names. Special chars allowed (-_.) {3, 40}

Adopted one of answers from: http://stackoverflow.com/questions/5948051/regex-extract-twitterusername-from-url

match int or float number, and following word (unit for example)

Get Gmail tag, user and domain of an email address

Get Gmail tag, user and domain of an email address. -- Fixed the bug that the label doesn't match if there are an dot on user.

This allows to the programer to match the time format groups, in a way that allow to discard some parts of the format. E.g. I have a format HhMmSs and i want to ignore the 'Ss' part from the format when I have no Seconds

insert into (a,b,c) values (1,2.3,"test");

hj

Find any url('~filename.jpg'). URL must contain tilde

I use this to match the first url present in a text message.

Everything, including proto, user:pass, host, query params and anchors

Unicode user name check with som allowed non-alhanum characters

Matches numbers formatted like currencies

Matches Portuguese phone numbers.

Get src in img