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1710N/A<title>Apache mod_rewrite - Apache HTTP Server</title>
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1710N/A<p class="menu"><a href="/mod/">Modules</a> | <a href="/mod/directives.html">Directives</a> | <a href="/faq/">FAQ</a> | <a href="/glossary.html">Glossary</a> | <a href="/sitemap.html">Sitemap</a></p>
1710N/A<p class="apache">Apache HTTP Server Version 2.3</p>
1710N/A<img alt="" src="/images/feather.gif" /></div>
1710N/A<div class="up"><a href="../"><img title="&lt;-" alt="&lt;-" src="/images/left.gif" /></a></div>
1710N/A<div id="path">
1710N/A<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 2.3</a></div><div id="page-content"><div id="preamble"><h1>Apache mod_rewrite</h1>
1710N/A<div class="toplang">
3996N/A<p><span>Available Languages: </span><a href="/en/rewrite/" title="English">&nbsp;en&nbsp;</a> |
1710N/A<a href="/fr/rewrite/" hreflang="fr" rel="alternate" title="Fran�ais">&nbsp;fr&nbsp;</a> |
1710N/A<a href="/tr/rewrite/" hreflang="tr" rel="alternate" title="T�rk�e">&nbsp;tr&nbsp;</a></p>
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1710N/A
1710N/A
1710N/A <p>mod_rewrite uses a rule-based rewriting engine (based on a
1710N/A regular-expression parser) to rewrite requested URLs on the
1710N/A fly. It supports an unlimited number of rules and an
1710N/A unlimited number of attached rule conditions for each rule to
1710N/A provide a really flexible and powerful URL manipulation
1710N/A mechanism. The URL manipulations can depend on various tests:
1710N/A server variables, environment variables, HTTP
1710N/A headers, time stamps external database lookups, and various other
1710N/A external processes or handlers, can be used to achieve granular URL
1710N/A matching.</p>
1710N/A
1710N/A <p>Rewrite rules can operate on the full URLs, including the path-info
1710N/A and query string portions, and may be used in per-server context
1710N/A (<code>httpd.conf</code>), per-virtualhost context (<code class="directive"><a href="/mod/core.html#virtualhost">&lt;VirtualHost&gt;</a></code> blocks), or
1710N/A per-directory context (<code>.htaccess</code> files and <code class="directive"><a href="/mod/core.html#directory">&lt;Directory&gt;</a></code> blocks). The
2127N/A rewritten result can lead to further rules, internal
1710N/A sub-processing, external request redirection, or proxy
1710N/A passthrough.</p>
1710N/A
1710N/A <p>Since mod_rewrite is so powerful, it can indeed be rather
1710N/A complex. This document supplements the <a href="/mod/mod_rewrite.html">reference documentation</a>, and
1710N/A attempts to allay some of that complexity, and provide highly
1710N/A annoted examples of common scenarios that you may handle with
1710N/A mod_rewrite. But we also attempt to show you when you should not
3996N/A use mod_rewrite, and use other standard Apache features instead,
3996N/A thus avoiding this unnecessary complexity.</p>
</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 class="top"><a href="#page-header"><img alt="top" src="/images/up.gif" /></a></div>
<div class="section">
<h2><a name="documentation" id="documentation">Documentation</a></h2>
<ul>
<li><a href="/mod/mod_rewrite.html">mod_rewrite reference
documentation</a></li>
<li><a href="rewrite_intro.html">Introduction</a></li>
<li><a href="rewrite_flags.html">Flags</a></li>
<li><a href="rewrite_tech.html">Technical details</a></li>
<li><a href="rewrite_guide.html">Rewrite Guide - useful examples</a></li>
<li><a href="rewrite_guide_advanced.html">Advanced Rewrite Guide - more
useful examples</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></p>
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<p class="apache">Copyright 2009 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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