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Extensible Markup Language  |  2006-01-15  |  8KB  |  151 lines
  1. <?xml version="1.0" encoding="ISO-8859-1"?>
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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  8. <title>mod_version - Apache HTTP Server</title>
  9. <link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" />
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  13. <body>
  14. <div id="page-header">
  15. <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>
  16. <p class="apache">Apache HTTP Server Version 2.2</p>
  17. <img alt="" src="../images/feather.gif" /></div>
  18. <div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
  19. <div id="path">
  20. <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>
  21. <div id="page-content">
  22. <div id="preamble"><h1>Apache Module mod_version</h1>
  23. <div class="toplang">
  24. <p><span>Available Languages: </span><a href="../en/mod/mod_version.html" title="English"> en </a> |
  25. <a href="../ja/mod/mod_version.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
  26. <a href="../ko/mod/mod_version.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
  27. </div>
  28. <table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Version dependent configuration</td></tr>
  29. <tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  30. <tr><th><a href="module-dict.html#ModuleIdentifier">ModuleáIdentifier:</a></th><td>version_module</td></tr>
  31. <tr><th><a href="module-dict.html#SourceFile">SourceáFile:</a></th><td>mod_version.c</td></tr>
  32. <tr><th><a href="module-dict.html#Compatibility">Compatibility:</a></th><td>Available in version 2.0.56 and later</td></tr></table>
  33. <h3>Summary</h3>
  34.  
  35.     <p>This module is designed for the use in test suites and large
  36.     networks which have to deal with different httpd versions and
  37.     different configurations. It provides a new container -- <code class="directive"><a href="#ifversion"><IfVersion></a></code>, which
  38.     allows a flexible version checking including numeric comparisons and
  39.     regular expressions.</p>
  40.  
  41.     <div class="example"><h3>Examples</h3><p><code>
  42.       <IfVersion 2.1.0><br />
  43.       <span class="indent">
  44.         # current httpd version is exactly 2.1.0<br />
  45.       </span>
  46.       </IfVersion><br />
  47.       <br />
  48.       <IfVersion >= 2.2><br />
  49.       <span class="indent">
  50.         # use really new features :-)<br />
  51.       </span>
  52.       </IfVersion>
  53.     </code></p></div>
  54.  
  55.     <p>See below for further possibilities.</p>
  56. </div>
  57. <div id="quickview"><h3 class="directives">Directives</h3>
  58. <ul id="toc">
  59. <li><img alt="" src="../images/down.gif" /> <a href="#ifversion"><IfVersion></a></li>
  60. </ul>
  61. </div>
  62.  
  63. <div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
  64. <div class="directive-section"><h2><a name="IfVersion" id="IfVersion"><IfVersion></a> <a name="ifversion" id="ifversion">Directive</a></h2>
  65. <table class="directive">
  66. <tr><th><a href="directive-dict.html#Description">Description:</a></th><td>contains version dependent configuration</td></tr>
  67. <tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code><IfVersion [[!]<var>operator</var>] <var>version</var>> ...
  68. </IfVersion></code></td></tr>
  69. <tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
  70. <tr><th><a href="directive-dict.html#Override">Override:</a></th><td>All</td></tr>
  71. <tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
  72. <tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_version</td></tr>
  73. </table>
  74.     <p>The <code class="directive"><IfVersion></code> section encloses
  75.     configuration directives which are executed only if the
  76.     <code class="program"><a href="../programs/httpd.html">httpd</a></code> version
  77.     matches the desired criteria. For normal (numeric) comparisons the
  78.     <var>version</var> argument has the format
  79.     <code><var>major</var>[.<var>minor</var>[.<var>patch</var>]]</code>, e.g.
  80.     <code>2.1.0</code> or <code>2.2</code>. <var>minor</var> and
  81.     <var>patch</var> are optional. If these numbers are omitted, they are
  82.     assumed to be zero. The following numerical <var>operator</var>s are
  83.     possible:</p>
  84.  
  85.     <table class="bordered"><tr class="header"><th><var>operator</var></th><th>description</th></tr>
  86. <tr><td><code>=</code> or <code>==</code></td>
  87.         <td>httpd version is equal</td></tr>
  88. <tr class="odd"><td><code>></code></td>
  89.         <td>httpd version is greater than</td></tr>
  90. <tr><td><code>>=</code></td>
  91.         <td>httpd version is greater or equal</td></tr>
  92. <tr class="odd"><td><code><</code></td>
  93.         <td>httpd version is less than</td></tr>
  94. <tr><td><code><=</code></td>
  95.         <td>httpd version is less or equal</td></tr>
  96. </table>
  97.  
  98.     <div class="example"><h3>Example</h3><p><code>
  99.       <IfVersion >= 2.1><br />
  100.       <span class="indent">
  101.         # this happens only in versions greater or<br />
  102.         # equal 2.1.0.<br />
  103.       </span>
  104.       </IfVersion>
  105.     </code></p></div>
  106.  
  107.     <p>Besides the numerical comparison it is possible to match a 
  108.     <a class="glossarylink" href="../glossary.html#regex" title="see glossary">regular expression</a> 
  109.     against the httpd version. There are two ways to write it:</p>
  110.  
  111.     <table class="bordered"><tr class="header"><th><var>operator</var></th><th>description</th></tr>
  112. <tr><td><code>=</code> or <code>==</code></td>
  113.         <td><var>version</var> has the form
  114.             <code>/<var>regex</var>/</code></td></tr>
  115. <tr class="odd"><td><code>~</code></td>
  116.         <td><var>version</var> has the form
  117.             <code><var>regex</var></code></td></tr>
  118. </table>
  119.  
  120.     <div class="example"><h3>Example</h3><p><code>
  121.       <IfVersion = /^2.1.[01234]$/><br />
  122.       <span class="indent">
  123.         # e.g. workaround for buggy versions
  124.       </span>
  125.       </IfVersion>
  126.     </code></p></div>
  127.  
  128.     <p>In order to reverse the meaning, all operators can be preceded by an
  129.     exclamation mark (<code>!</code>):</p>
  130.  
  131.     <div class="example"><p><code>
  132.       <IfVersion !~ ^2.1.[01234]$><br />
  133.       <span class="indent">
  134.         # not for those versions<br />
  135.       </span>
  136.       </IfVersion>
  137.     </code></p></div>
  138.  
  139.     <p>If the <var>operator</var> is omitted, it is assumed to be
  140.     <code>=</code>.</p>
  141.  
  142. </div>
  143. </div>
  144. <div class="bottomlang">
  145. <p><span>Available Languages: </span><a href="../en/mod/mod_version.html" title="English"> en </a> |
  146. <a href="../ja/mod/mod_version.html" hreflang="ja" rel="alternate" title="Japanese"> ja </a> |
  147. <a href="../ko/mod/mod_version.html" hreflang="ko" rel="alternate" title="Korean"> ko </a></p>
  148. </div><div id="footer">
  149. <p class="apache">Copyright 1995-2006 The Apache Software Foundation or its licensors, as applicable.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
  150. <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></div>
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