A community committed to sharing Perl knowledge and coding tips. The site contains questions and answers, useful...
The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5. PCRE has its own native API as well as a...
RegexOne provides a set of interactive lessons and examples to help you learn regular expressions
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Myregextester.com is the premier online regular expressions tester that allows visitors to construct, test, and optimize regular expressions.
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Test PHP functions online. There are available more then 200 PHP functions you can test online!