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db878466c5e95073429dda0bdd001f45e9486e16fielding<title>Apache mod_rewrite - Apache HTTP Server</title>
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48edb039c53e1ca6320a9050de6e804d56179bebnd<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p>
48edb039c53e1ca6320a9050de6e804d56179bebnd<p class="apache">Apache HTTP Server Version 2.5</p>
48edb039c53e1ca6320a9050de6e804d56179bebnd<img alt="" src="/images/feather.gif" /></div>
48edb039c53e1ca6320a9050de6e804d56179bebnd<div class="up"><a href="../"><img title="&lt;-" alt="&lt;-" src="/images/left.gif" /></a></div>
48edb039c53e1ca6320a9050de6e804d56179bebnd<div id="path">
48edb039c53e1ca6320a9050de6e804d56179bebnd<a href="http://www.apache.org/">Apache</a> &gt; <a href="http://httpd.apache.org/">HTTP Server</a> &gt; <a href="http://httpd.apache.org/docs/">Documentation</a> &gt; <a href="../">Version 2.5</a></div><div id="page-content"><div id="preamble"><h1>Apache mod_rewrite</h1>
48edb039c53e1ca6320a9050de6e804d56179bebnd<div class="toplang">
48edb039c53e1ca6320a9050de6e804d56179bebnd<p><span>Available Languages: </span><a href="/en/rewrite/" title="English">&nbsp;en&nbsp;</a> |
48edb039c53e1ca6320a9050de6e804d56179bebnd<a href="/fr/rewrite/" hreflang="fr" rel="alternate" title="Fran�ais">&nbsp;fr&nbsp;</a> |
48edb039c53e1ca6320a9050de6e804d56179bebnd<a href="/tr/rewrite/" hreflang="tr" rel="alternate" title="T�rk�e">&nbsp;tr&nbsp;</a> |
48edb039c53e1ca6320a9050de6e804d56179bebnd<a href="/zh-cn/rewrite/" hreflang="zh-cn" rel="alternate" title="Simplified Chinese">&nbsp;zh-cn&nbsp;</a></p>
48edb039c53e1ca6320a9050de6e804d56179bebnd</div>
48edb039c53e1ca6320a9050de6e804d56179bebnd
48edb039c53e1ca6320a9050de6e804d56179bebnd
48edb039c53e1ca6320a9050de6e804d56179bebnd <p><code class="module"><a href="/mod/mod_rewrite.html">mod_rewrite</a></code> provides a way to modify incoming
48edb039c53e1ca6320a9050de6e804d56179bebnd URL requests, dynamically, based on <a href="intro.html#regex">regular
48edb039c53e1ca6320a9050de6e804d56179bebnd expression</a> rules. This allows you to map arbitrary URLs onto
a0442b118db844ce6954970c9eec1942f447d6bfnd your internal URL structure in any way you like.</p>
48edb039c53e1ca6320a9050de6e804d56179bebnd
48edb039c53e1ca6320a9050de6e804d56179bebnd <p>It supports an unlimited number of rules and an
48edb039c53e1ca6320a9050de6e804d56179bebnd unlimited number of attached rule conditions for each rule to
48edb039c53e1ca6320a9050de6e804d56179bebnd provide a really flexible and powerful URL manipulation
48edb039c53e1ca6320a9050de6e804d56179bebnd mechanism. The URL manipulations can depend on various tests:
48edb039c53e1ca6320a9050de6e804d56179bebnd server variables, environment variables, HTTP
48edb039c53e1ca6320a9050de6e804d56179bebnd headers, time stamps, external database lookups, and various other
48edb039c53e1ca6320a9050de6e804d56179bebnd external programs or handlers, can be used to achieve granular URL
48edb039c53e1ca6320a9050de6e804d56179bebnd matching.</p>
48edb039c53e1ca6320a9050de6e804d56179bebnd
f6c8886b17f80198c42ef930a0d7ccac5b4a86e6nd <p>Rewrite rules can operate on the full URLs, including the path-info
48edb039c53e1ca6320a9050de6e804d56179bebnd and query string portions, and may be used in per-server context
48edb039c53e1ca6320a9050de6e804d56179bebnd (<code>httpd.conf</code>), per-virtualhost context (<code class="directive"><a href="/mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code> blocks), or
48edb039c53e1ca6320a9050de6e804d56179bebnd per-directory context (<code>.htaccess</code> files and <code class="directive"><a href="/mod/core.html#directory">&lt;Directory&gt;</a></code> blocks). The
48edb039c53e1ca6320a9050de6e804d56179bebnd rewritten result can lead to further rules, internal
48edb039c53e1ca6320a9050de6e804d56179bebnd sub-processing, external request redirection, or proxy
48edb039c53e1ca6320a9050de6e804d56179bebnd passthrough, depending on what <a href="flags.html">flags</a> you
48edb039c53e1ca6320a9050de6e804d56179bebnd attach to the rules.</p>
48edb039c53e1ca6320a9050de6e804d56179bebnd
48edb039c53e1ca6320a9050de6e804d56179bebnd <p>Since mod_rewrite is so powerful, it can indeed be rather
48edb039c53e1ca6320a9050de6e804d56179bebnd complex. This document supplements the <a href="/mod/mod_rewrite.html">reference documentation</a>, and
48edb039c53e1ca6320a9050de6e804d56179bebnd attempts to allay some of that complexity, and provide highly
annotated examples of common scenarios that you may handle with
mod_rewrite. But we also attempt to show you when you should not
use mod_rewrite, and use other standard Apache features instead,
thus avoiding this unnecessary complexity.</p>
<ul>
<li><a href="/mod/mod_rewrite.html">mod_rewrite reference
documentation</a></li>
<li><a href="intro.html">Introduction to regular expressions and mod_rewrite</a></li>
<li><a href="remapping.html">Using mod_rewrite for redirection and remapping of URLs</a></li>
<li><a href="access.html">Using mod_rewrite to control access</a></li>
<li><a href="vhosts.html">Dynamic virtual hosts with mod_rewrite</a></li>
<li><a href="proxy.html">Dynamic proxying with mod_rewrite</a></li>
<li><a href="rewritemap.html">Using RewriteMap</a></li>
<li><a href="advanced.html">Advanced techniques</a></li>
<li><a href="avoid.html">When <strong>NOT</strong> to use mod_rewrite</a></li>
<li><a href="flags.html">RewriteRule Flags</a></li>
<li><a href="tech.html">Technical details</a></li>
</ul>
</div>
<div id="quickview"><h3>See also</h3><ul class="seealso"><li><a href="/mod/mod_rewrite.html">mod_rewrite reference
documentation</a></li><li><a href="/urlmapping.html">Mapping URLs to the Filesystem</a></li><li><a href="http://wiki.apache.org/httpd/Rewrite">mod_rewrite
wiki</a></li><li><a href="/glossary.html">Glossary</a></li></ul></div>
</div>
<div class="bottomlang">
<p><span>Available Languages: </span><a href="/en/rewrite/" title="English">&nbsp;en&nbsp;</a> |
<a href="/fr/rewrite/" hreflang="fr" rel="alternate" title="Fran�ais">&nbsp;fr&nbsp;</a> |
<a href="/tr/rewrite/" hreflang="tr" rel="alternate" title="T�rk�e">&nbsp;tr&nbsp;</a> |
<a href="/zh-cn/rewrite/" hreflang="zh-cn" rel="alternate" title="Simplified Chinese">&nbsp;zh-cn&nbsp;</a></p>
</div><div id="footer">
<p class="apache">Copyright 2014 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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