(?\w+)\/((?\w+)?)((::(?\d+.\d+)?)?)\/(?\w+)(::((?\d+.\d+)?))?

https://stackoverflow.com/questions/56074417/how-to-exclude-words-in-regexp

https://stackoverflow.com/questions/56074417/how-to-exclude-words-in-regexp

Usernames are used everywhere on the internet. They are what give users a unique identity on their favorite sites. You need to check all the usernames in a database. Here are some simple rules that users have to follow when creating their username. 1) The only numbers in the username have to be at...