<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Installation</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="opcache.requirements.html">Requirements</a></div> <div class="next" style="text-align: right; float: right;"><a href="opcache.configuration.html">Runtime Configuration</a></div> <div class="up"><a href="opcache.setup.html">Installing/Configuring</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="opcache.installation" class="sect1"> <h2 class="title">Installation</h2> <p class="para"> The process of installing OPcache varies depending on which version of PHP you're running. Please refer to the appropriate section below. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> If you want to use OPcache with <a href="http://xdebug.org/" class="link external">» Xdebug</a>, you must load OPcache before Xdebug. </p> </p></blockquote> <div class="sect2" id="opcache.installation.bundled"> <h3 class="title">PHP 5.5.0 and later</h3> <p class="para"> By default, OPcache will be compiled as a shared extension. If you have disabled the building of default extensions with <strong class="option configure">--disable-all</strong> , you must compile PHP with the <strong class="option configure">--enable-opcache</strong> option for OPcache to be available. </p> <p class="para"> Once compiled, you can use the <a href="ini.core.html#ini.zend-extension" class="link">zend_extension</a> configuration directive to load the OPcache extension into PHP. This can be done with <em>zend_extension=/full/path/to/opcache.so</em> on non-Windows platforms, and <em>zend_extension=C:\path\to\php_opcache.dll</em> on Windows. </p> </div> <div class="sect2" id="opcache.installation.pecl"> <h3 class="title">PHP 5.2, 5.3 and 5.4</h3> <p class="para"> This <a href="http://pecl.php.net/" class="link external">» PECL</a> extension is not bundled with PHP. </p> <p class="para"> Information for installing this PECL extension may be found in the manual chapter titled <a href="install.pecl.html" class="link">Installation of PECL extensions</a>. Additional information such as new releases, downloads, source files, maintainer information, and a CHANGELOG, can be located here: <a href="http://pecl.php.net/package/ZendOpcache" class="link external">» http://pecl.php.net/package/ZendOpcache</a>. </p> <p class="para"> A <acronym title="Dynamic Link Library">DLL</acronym> for this <acronym title="PHP Extension and Application Repository">PECL</acronym> extension is currently unavailable. See also the <a href="install.windows.building.html" class="link">building on Windows</a> section. </p> </div> <div class="sect2" id="opcache.installation.recommended"> <h3 class="title">Recommended php.ini settings</h3> <p class="para"> The following settings are generally recommended as providing good performance: </p> <div class="informalexample"> <div class="example-contents"> <div class="cdata"><pre> opcache.memory_consumption=128 opcache.interned_strings_buffer=8 opcache.max_accelerated_files=4000 opcache.revalidate_freq=60 opcache.fast_shutdown=1 opcache.enable_cli=1 </pre></div> </div> </div> <p class="para"> You may also want to consider disabling <a href="opcache.configuration.html#ini.opcache.save-comments" class="link">opcache.save_comments</a> and enabling <a href="opcache.configuration.html#ini.opcache.enable-file-override" class="link">opcache.enable_file_override</a>, however note that you will have to test your code before using these in production as they are known to break some frameworks and applications, particularly in cases where documentation comment annotations are used. </p> <p class="para"> A full list of configuration directives supported by OPcache <a href="opcache.configuration.html" class="link">is also available</a>. </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="opcache.requirements.html">Requirements</a></div> <div class="next" style="text-align: right; float: right;"><a href="opcache.configuration.html">Runtime Configuration</a></div> <div class="up"><a href="opcache.setup.html">Installing/Configuring</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>
