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| <p class="apache">Apache HTTP Server Version 2.3</p> |
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| <div id="page-content"> |
| <div id="preamble"><h1>Apache Module mod_version</h1> |
| <div class="toplang"> |
| <p><span>Available Languages: </span><a href="../en/mod/mod_version.html" title="English"> en </a> | |
| <a href="../ja/mod/mod_version.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> | |
| <a href="../ko/mod/mod_version.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
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| <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Version dependent configuration</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>version_module</td></tr> |
| <tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_version.c</td></tr> |
| <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.0.56 and later</td></tr></table> |
| <h3>Summary</h3> |
| |
| <p>This module is designed for the use in test suites and large |
| networks which have to deal with different httpd versions and |
| different configurations. It provides a new container -- <code class="directive"><a href="#ifversion"><IfVersion></a></code>, which |
| allows a flexible version checking including numeric comparisons and |
| regular expressions.</p> |
| |
| <div class="example"><h3>Examples</h3><p><code> |
| <IfVersion 2.1.0><br /> |
| <span class="indent"> |
| # current httpd version is exactly 2.1.0<br /> |
| </span> |
| </IfVersion><br /> |
| <br /> |
| <IfVersion >= 2.2><br /> |
| <span class="indent"> |
| # use really new features :-)<br /> |
| </span> |
| </IfVersion> |
| </code></p></div> |
| |
| <p>See below for further possibilities.</p> |
| </div> |
| <div id="quickview"><h3 class="directives">Directives</h3> |
| <ul id="toc"> |
| <li><img alt="" src="../images/down.gif" /> <a href="#ifversion"><IfVersion></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="IfVersion" id="IfVersion"><IfVersion></a> <a name="ifversion" id="ifversion">Directive</a></h2> |
| <table class="directive"> |
| <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>contains version dependent configuration</td></tr> |
| <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code><IfVersion [[!]<var>operator</var>] <var>version</var>> ... |
| </IfVersion></code></td></tr> |
| <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr> |
| <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</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_version</td></tr> |
| </table> |
| <p>The <code class="directive"><IfVersion></code> section encloses |
| configuration directives which are executed only if the |
| <code class="program"><a href="../programs/httpd.html">httpd</a></code> version |
| matches the desired criteria. For normal (numeric) comparisons the |
| <var>version</var> argument has the format |
| <code><var>major</var>[.<var>minor</var>[.<var>patch</var>]]</code>, e.g. |
| <code>2.1.0</code> or <code>2.2</code>. <var>minor</var> and |
| <var>patch</var> are optional. If these numbers are omitted, they are |
| assumed to be zero. The following numerical <var>operator</var>s are |
| possible:</p> |
| |
| <table class="bordered"><tr class="header"><th><var>operator</var></th><th>description</th></tr> |
| <tr><td><code>=</code> or <code>==</code></td> |
| <td>httpd version is equal</td></tr> |
| <tr class="odd"><td><code>></code></td> |
| <td>httpd version is greater than</td></tr> |
| <tr><td><code>>=</code></td> |
| <td>httpd version is greater or equal</td></tr> |
| <tr class="odd"><td><code><</code></td> |
| <td>httpd version is less than</td></tr> |
| <tr><td><code><=</code></td> |
| <td>httpd version is less or equal</td></tr> |
| </table> |
| |
| <div class="example"><h3>Example</h3><p><code> |
| <IfVersion >= 2.1><br /> |
| <span class="indent"> |
| # this happens only in versions greater or<br /> |
| # equal 2.1.0.<br /> |
| </span> |
| </IfVersion> |
| </code></p></div> |
| |
| <p>Besides the numerical comparison it is possible to match a |
| <a class="glossarylink" href="../glossary.html#regex" title="see glossary">regular expression</a> |
| against the httpd version. There are two ways to write it:</p> |
| |
| <table class="bordered"><tr class="header"><th><var>operator</var></th><th>description</th></tr> |
| <tr><td><code>=</code> or <code>==</code></td> |
| <td><var>version</var> has the form |
| <code>/<var>regex</var>/</code></td></tr> |
| <tr class="odd"><td><code>~</code></td> |
| <td><var>version</var> has the form |
| <code><var>regex</var></code></td></tr> |
| </table> |
| |
| <div class="example"><h3>Example</h3><p><code> |
| <IfVersion = /^2.1.[01234]$/><br /> |
| <span class="indent"> |
| # e.g. workaround for buggy versions |
| </span> |
| </IfVersion> |
| </code></p></div> |
| |
| <p>In order to reverse the meaning, all operators can be preceded by an |
| exclamation mark (<code>!</code>):</p> |
| |
| <div class="example"><p><code> |
| <IfVersion !~ ^2.1.[01234]$><br /> |
| <span class="indent"> |
| # not for those versions<br /> |
| </span> |
| </IfVersion> |
| </code></p></div> |
| |
| <p>If the <var>operator</var> is omitted, it is assumed to be |
| <code>=</code>.</p> |
| |
| </div> |
| </div> |
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| <p><span>Available Languages: </span><a href="../en/mod/mod_version.html" title="English"> en </a> | |
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| <a href="../ko/mod/mod_version.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p> |
| </div><div id="footer"> |
| <p class="apache">Copyright 2011 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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