This table summarizes the meaning of various strings in different regexp syntaxes. It is intended as a quick reference, rather than a tutorial or specification. Please report any errors.
As the first online Regular Expression tester to offer realtime highlighting and offering more languages than any other online tester, ReJAx continues to be the coolest and easiest to use Regular Expression tester on the web. Supported languages: * JavaScript * PHP 5 PCRE * PHP 5 POSIX * Ruby - BETA!! * PERL 5 * UNIX Shell Pattern It is not necessary to enter the beginning and ending slashes in the pattern field. Not all modifiers will be compatible with every language. Backreferences (when available) are usually in the form of \n where n is the reference number