phpguru.org has a nice PCRE cheat sheet. Take a look at it if you work with PHP.
That cheat sheet is inspired by regex cheat sheet by ILoveJackDaniels.com that I used to use. Now that great site is known as and has a good collection of free Cheat Sheets, printable quick references for a variety of languages and web technologies.
6 Comments
Samantha says:
Amazing post, saved your website in interest to read more!
Patrick says:
Interesting read, I might look more into this.
Tomi Engdahl says:
Any output that you get that looks like what you wanted is not pure luck it is pure magic.
Arthur C. Clarke Quotes: Any sufficiently advanced technology is indistinguishable from magic.
Tomi Engdahl says:
https://hackaday.com/2020/10/29/diy-regular-expressions/
https://github.com/LowLevelJavaScript/Regular-Expression-Engine
Tomi Engdahl says:
https://www.regular-expressions.info/lookaround.html
Tomi Engdahl says:
https://hackaday.com/2021/02/01/13000-regular-expressions-make-an-editors-life-easier/