Grabs the ID for the regex101.com permalink code. If a revision number is provided, grab that as well.

The BNF rules from RFC 5322 transformed to PCRE by Nikita Popov and described in the post http://nikic.github.io/2012/06/15/The-true-power-of-regular-expressions.html.

Trim leading and trailing whitespace from a string.

Detects most of the phone numbers all over the world

A quite neat regular expression for URLs, e-mails..., I found on Matthew O'Riordan's blog.

Validate and capture dateTime parts, includes validation for leap years, range 1000-2999. Fixed bug

Checks that a password has a minimum of 6 characters, at least 1 uppercase letter, 1 lowercase letter, and 1 number with no spaces.

Matches distorted email addresses and converts them back to real ones.

A neat regex for finding out whether a given torrent name is a series or a movie. Returns the full name of the series with the separator needed to make it pretty (ie, replace it with space or what you want). Also returns the season number or the year for the movie/series, depending on what was previously matched.

Email address, most used cases

Attempts to mimic Google search box behavior, returning an array with the separated search strings (that keep the +/- indicator for following operations)

Allows phone numbers with optional country code, optional special characters and whitespace

Matches any valid JSON object, matches recursively. Passes all JSON test cases I found.

Safe Password that allow only with a number, a lowercase, a uppercase, and a special character

1-15 alphanumeric login name