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<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> <meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" /> <!-- XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX This file is generated from xml source: DO NOT EDIT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX --> <title>mod_substitute - Apache HTTP Server Version 2.2</title> <link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> <link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> <link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> <script src="../style/scripts/prettify.min.js" type="text/javascript"> </script> <link href="../images/favicon.ico" rel="shortcut icon" /><link href="http://httpd.apache.org/docs/current/mod/mod_substitute.html" rel="canonical" /></head> <body> <div id="page-header"> <p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/directives.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> <p class="apache">Apache HTTP Server Version 2.2</p> <img alt="" src="../images/feather.gif" /></div> <div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> <div id="path"> <a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.2</a> > <a href="./">Modules</a></div> <div id="page-content"> <div class="retired"><h4>Please note</h4> <p> This document refers to a legacy release (<strong>2.2</strong>) of Apache httpd. The active release (<strong>2.4</strong>) is documented <a href="http://httpd.apache.org/docs/current">here</a>. If you have not already upgraded, please follow <a href="http://httpd.apache.org/docs/current/upgrading.html">this link</a> for more information.</p> <p>You may follow <a href="http://httpd.apache.org/docs/current/mod/mod_substitute.html">this link</a> to go to the current version of this document.</p></div><div id="preamble"><h1>Apache Module mod_substitute</h1> <div class="toplang"> <p><span>Available Languages: </span><a href="../en/mod/mod_substitute.html" title="English"> en </a></p> </div> <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Perform search and replace operations on response bodies</td></tr> <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> <tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>substitute_module</td></tr> <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_substitute.c</td></tr> <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in Apache 2.2.7 and later</td></tr></table> <h3>Summary</h3> <p><code class="module"><a href="../mod/mod_substitute.html">mod_substitute</a></code> provides a mechanism to perform both regular expression and fixed string substitutions on response bodies.</p> </div> <div id="quickview"><h3 class="directives">Directives</h3> <ul id="toc"> <li><img alt="" src="../images/down.gif" /> <a href="#substitute">Substitute</a></li> <li><img alt="" src="../images/down.gif" /> <a href="#substituteinheritbefore">SubstituteInheritBefore</a></li> </ul> <ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div> <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> <div class="directive-section"><h2><a name="Substitute" id="Substitute">Substitute</a> <a name="substitute" id="substitute">Directive</a></h2> <table class="directive"> <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Pattern to filter the response content</td></tr> <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>Substitute <var>s/pattern/substitution/[infq]</var></code></td></tr> <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</td></tr> <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_substitute</td></tr> </table> <p>The <code class="directive">Substitute</code> directive specifies a search and replace pattern to apply to the response body.</p> <p>The meaning of the pattern can be modified by using any combination of these flags:</p> <dl> <dt><code>i</code></dt> <dd>Perform a case-insensitive match.</dd> <dt><code>n</code></dt> <dd>By default the pattern is treated as a regular expression. Using the <code>n</code> flag forces the pattern to be treated as a fixed string.</dd> <dt><code>f</code></dt> <dd>The <code>f</code> flag causes mod_substitute to flatten the result of a substitution allowing for later substitutions to take place on the boundary of this one. This is the default.</dd> <dt><code>q</code></dt> <dd>The <code>q</code> flag causes mod_substitute to not flatten the buckets after each substitution. This can result in much faster response and a decrease in memory utilization, but should only be used if there is no possibility that the result of one substitution will ever match a pattern or regex of a subsequent one.</dd> </dl> <div class="example"><h3>Example</h3><p><code> <Location /> <span class="indent"> AddOutputFilterByType SUBSTITUTE text/html<br /> Substitute s/foo/bar/ni<br /> </span> </Location> </code></p></div> <p>If either the pattern or the substitution contain a slash character then an alternative delimiter should be used:</p> <div class="example"><h3>Example of using an alternate delimiter</h3><p><code> <Location /> <span class="indent"> AddOutputFilterByType SUBSTITUTE text/html<br /> Substitute "s|<BR */?>|<br />|i" </span> </Location> </code></p></div> </div> <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> <div class="directive-section"><h2><a name="SubstituteInheritBefore" id="SubstituteInheritBefore">SubstituteInheritBefore</a> <a name="substituteinheritbefore" id="substituteinheritbefore">Directive</a></h2> <table class="directive"> <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Change the merge order of inherited patterns</td></tr> <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>SubstituteInheritBefore on|off</code></td></tr> <tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>SubstituteInheritBefore off</code></td></tr> <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr> <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</td></tr> <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_substitute</td></tr> <tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.2.32 and later</td></tr> </table> <p>Whether to apply the inherited <code class="directive">Substitute</code> patterns first (<code>on</code>), or after the ones of the current context (<code>off</code>). <code class="directive">SubstituteInheritBefore</code> is itself inherited, hence contexts that inherit it (those that don't specify their own <code class="directive">SubstituteInheritBefore</code> value) will apply the closest defined merge order.</p> </div> </div> <div class="bottomlang"> <p><span>Available Languages: </span><a href="../en/mod/mod_substitute.html" title="English"> en </a></p> </div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed again by our moderators if they are either implemented or considered invalid/off-topic. 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