Find an exact phrase (with each space and character in its own place) only if it is within the first 40 characters of the entire sentence. Useful to search non-standard phrases in log files.

recognize php code

Get all images tag in a Markdown Format Text

International numeric format validator

meh

Extract magnet links

Basically take a number and split it into thousands. I.e. take three chars from the end of the number until there is 3 or less chars left.

Alpha numeric characters including "hyphens" "quotation marks" and "semicolons" only

3 alpha characters expected, except in the instance of Germany which allows 1 alpha character.

+375 (33) 302-66-60 or +37533302-66-60 http://stackoverflow.com/questions/33056434/regex-for-phones-at-belarus

+375 (33) 302-66-60 or +375333026660 http://stackoverflow.com/questions/33056434/regex-for-phones-at-belarus

Extracts system name, planet, moon (if applicable), and NPC faction for NPC stations in the MMORG Eve Online.

I've been using this regex to get a list of expanded functions/subs (specifically the names of them from the 'func' capture group) from VB code that is used as input in a code converter for a project at work.