ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.
One of a set of tools we're offering as a way to say thank you for being a part of the community.
Do Not memorize these things by heart, look them up. In addition to the many basic PHP language features, there are an additional 1500 plus functions that are available. They are all well documented at http://php.net/