Back references are regular expression constructs that make use of capturing in regex to perform replacement based on parts of the matched string captured during a match sequence in the regexp pattern.
Pretty straightforward; I can't seem to find anything definitive regarding PHP's preg_replace() supporting named backreferences: // should match, replace, and …
php regex preg-replace backreferenceI'm working on a virtual domain system. I have a wildcard DNS set up as *.loc, and I'm trying to …
apache .htaccess mod-rewrite wildcard-subdomain backreferenceI'm looking for a regular expression that will behave as follows: input: "hello world." output: he, el, ll, lo, wo, …
regex perl backreference