Matches dates in the following format: %Y/%m/%dT%H:%M:%S This is 24h format (00-23h) and no leap seconds.

Matches dates in the following format: %Y/%m/%dT%H:%M:%S This is 24h format (00-23h) and no leap seconds.

This extracts the first three octets of an IPv4 address, or the first half of an IPv6 address. This may be suitable for classifying addresses by address groups.

This attempts to extract the top-level domain name from a fully-qualified name. It recognizes the third-level domain structure commonly used by the .uk TLD, extracts only the 2LD.TLD from the common legacy TLDs (com, net, org, etc.). It will undoubtedly need some care and feeding as new TLDs becom...

Final version used in script.

Example: preg_match_all('//', '', $arr, PREG_PATTERN_ORDER); Returns:...

Matches things like; 38A 17b 950 ...

Useful for parsing HTML templates written in mustache language. This regex does not support custom delimiter tags. For documentation see: http://mustache.github.io/mustache.5.html