Regular Expressions are a standardized way of matching patterns, used by many programming languages, including Ruby and PHP.
A regular expression is a sequence of characters (but not a string) which "matches" a specific set of strings. Regexes may be initialized via either the <a href="/mediawiki/Window#RegExp" title="Window">Window.RegExp</a> constructor or the regex literal.
Regular Expressions are a standardized way of matching patterns, used by many programming languages, including Ruby and PHP.
A regular expression is a sequence of characters (but not a string) which "matches" a specific set of strings. Regexes may be initialized via either the <a href="/mediawiki/Window#RegExp" title="Window">Window.RegExp</a> constructor or the regex literal.