Editing Rewrite engine (section)

==Usage==
{{see also|Semantic URL|URL shortening}}
Web sites with [[dynamic web page|dynamic content]] can use URLs that generate pages from the server using [[query string]] parameters. These are often rewritten to resemble URLs for [[static web page|static page]]s on a site with a [[folder (computing)|subdirectory hierarchy]]. For example, the URL to a [[wiki]] page with title ''Rewrite_engine'' might be:
 <nowiki>http://example.com/w/index.php?title=Rewrite_engine</nowiki>
but can be rewritten as:
 <nowiki>http://example.com/wiki/Rewrite_engine</nowiki>

A [[blog]] might have a URL that encodes the dates of each entry:
 <nowiki>http://www.example.com/Blog/Posts.php?Year=2006&Month=12&Day=19</nowiki>
It can be altered like this:
 <nowiki>http://www.example.com/Blog/2006/12/19/</nowiki>
which also allows the user to change the URL to see all postings available in December, simply by removing the text encoding the day '19', as though navigating "up" a directory:
 <nowiki>http://www.example.com/Blog/2006/12/</nowiki>

A site can pass specialized terms from the URL to its [[search engine]] as a search term. This would allow users to search directly from their browser. For example, the URL as entered into the browser's [[location bar]]:
 <nowiki>http://example.com/search term</nowiki>
will be [[urlencode|URL-encode]]d by the browser before it makes the [[HTTP request]]. The server could rewrite this to:
 <nowiki>http://example.com/search.php?q=search%20term</nowiki>