Here's a PHP PCRE regexp that has room for improvement but works for me...

Any Number Allow range 12-34 some special characters Only W and L alphabet for demo use.

Removing URL Parameters from URL PATH

This regular expression will match anytime in a string where an odd amount of backslashes directly following eachother are present.

Simply match a run of the meal MAC address

This is what we use to generate coupon codes for the company events

Used matching to http links within a page_source that are either jpeg or gif formats

Extract folder name and markers from a list of IMAP folders.