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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Where to find an extension?</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="install.pecl.windows.html">Installing a PHP extension</a></div> <div class="next" style="text-align: right; float: right;"><a href="install.pecl.pear.html">Compiling shared PECL extensions with the pecl command</a></div> <div class="up"><a href="install.pecl.html">Installation of PECL extensions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="install.pecl.windows.find" class="sect1"> <h2 class="title">Where to find an extension?</h2> <p class="para"> PHP extensions are usually called "php_*.dll" (where the star represents the name of the extension) and they are located under the "PHP\ext" ("PHP\extensions" in PHP4) folder. </p> <p class="para"> PHP ships with the extensions most useful to the majority of developers. They are called "core" extensions. </p> <p class="para"> However, if you need functionnality not provided by any core extension, you may still be able to find one in PECL. The PHP Extension Community Library (PECL) is a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP extensions. </p> <p class="para"> If you have developped an extension for your own uses, you might want to think about hosting it on PECL so that others with the same needs can benefit from your time. A nice side effect is that you give them a good chance to give you feedback, (hopefully) thanks, bug reports and even fixes/patches. Before you submit your extension for hosting on PECL, please read http://pecl.php.net/package-new.php. </p> <div id="install.pecl.windows.which" class="sect2"> <h3 class="title">Which extension to download?</h3> <p class="para"> <em class="emphasis">Many times, you will find several versions of each DLL:</em> <ul class="itemizedlist"> <li class="listitem"> <span class="simpara"> Different version numbers (at least the first two numbers should match) </span> </li> <li class="listitem"> <span class="simpara"> Different thread safety settings </span> </li> <li class="listitem"> <span class="simpara"> Different processor settings (x86, 64 bits...) </span> </li> <li class="listitem"> <span class="simpara"> Different debugging settings </span> </li> <li class="listitem"> <span class="simpara"> <i>ect.</i> </span> </li> </ul> </p> <p class="para"> You should keep in mind that your extension settings should match all the settings of the PHP executable you are using. The following PHP script will tell you <em class="emphasis">all</em> about your PHP settings: <div class="example-contents"><pre><div class="cdata"><pre><?phpphpinfo();?></pre></div> </pre></div> </p> <p class="para"> Or from the command line, run: <div class="example-contents"><pre><div class="cdata"><pre>drive:\\path\to\php\executable\php.exe -i</pre></div> </pre></div> </p> </div> <div id="install.pecl.windows.loading" class="sect2"> <h3 class="title">Loading an extension</h3> <p class="para"> The most common way to load a PHP extension is to include it in your <var class="filename">php.ini</var> configuration file. Please note that many extensions are already present in your <var class="filename">php.ini</var> and that you only need to remove the semicolon to activate them. <div class="example-contents"><pre><div class="cdata"><pre>;extension=php_extname.dll</pre></div> </pre></div> <div class="example-contents"><pre><div class="cdata"><pre>extension=php_extname.dll</pre></div> </pre></div> </p> <p class="para"> However, some webservers are confusing because they do not use the php.ini located alongside your PHP executable. To find out where your actual <var class="filename">php.ini</var> resides, look for its path in <a href="function.phpinfo.html" class="function">phpinfo()</a>: <div class="example-contents"><pre><div class="cdata"><pre>Configuration File (php.ini) Path C:\WINDOWS</pre></div> </pre></div> <div class="example-contents"><pre><div class="cdata"><pre>Loaded Configuration File C:\Program Files\PHP\5.2\php.ini</pre></div> </pre></div> </p> <p class="para"> After activating an extension, save <var class="filename">php.ini</var>, restart the webserver and check <a href="function.phpinfo.html" class="function">phpinfo()</a> again. The new extension should now have its own section. </p> </div> <div id="install.pecl.windows.problemsolving" class="sect2"> <h3 class="title">Resolving problems</h3> <p class="para"> If the extension does not appear in <a href="function.phpinfo.html" class="function">phpinfo()</a>, you should check your logs to learn where the problem comes from. </p> <p class="para"> If you are using PHP from the command line (CLI), the extension loading error can be read directly on screen. </p> <p class="para"> If you are using PHP with a webserver, the location and format of the logs vary depending on your software. Please read your webserver documentation to locate the logs, as it does not have anything to do with PHP itself. </p> <p class="para"> Common problems are the location of the DLL, the value of the "<a href="ini.core.html#ini.extension-dir" class="link"> extension_dir</a>" setting inside <i>php.ini</i> and compile-time setting mismatches. </p> <p class="para"> If the problem lies in a compile-time setting mismatch, you probably didn't download the right DLL. Try downloading again the extension with the right settings. Again, <a href="function.phpinfo.html" class="function">phpinfo()</a> can be of great help. </p> </div> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="install.pecl.windows.html">Installing a PHP extension</a></div> <div class="next" style="text-align: right; float: right;"><a href="install.pecl.pear.html">Compiling shared PECL extensions with the pecl command</a></div> <div class="up"><a href="install.pecl.html">Installation of PECL extensions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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