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https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@117524 c90b9560-bf6c-de11-be94-00142212c4b1
99 lines
2.5 KiB
XML
99 lines
2.5 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.7 $ -->
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<!-- splitted from ./en/functions/info.xml, last change in rev 1.2 -->
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<refentry id="function.extension-loaded">
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<refnamediv>
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<refname>extension_loaded</refname>
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<refpurpose>Find out whether an extension is loaded</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<methodsynopsis>
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<type>bool</type><methodname>extension_loaded</methodname>
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<methodparam><type>string</type><parameter>name</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns &true; if the extension identified by <parameter>name</parameter>
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is loaded, &false; otherwise.
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</para>
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<para>
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<example>
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<title><function>extension_loaded</function> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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if (!extension_loaded('gd')) {
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if (!dl('gd.so')) {
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exit;
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}
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}
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?>
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]]>
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</programlisting>
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</example>
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</para>
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<para>
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You can see the names of various extensions by using
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<function>phpinfo</function> or if you're using the
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<literal>CGI</literal> or <literal>CLI</literal> version of
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<literal>PHP</literal> you can use the <literal>-m</literal> switch to
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list all available extensions:
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<screen>
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<![CDATA[
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$ php -m
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[PHP Modules]
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xml
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tokenizer
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standard
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sockets
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session
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posix
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pcre
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overload
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mysql
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mbstring
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ctype
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[Zend Modules]
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]]>
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</screen>
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</para>
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<note>
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<para>
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<function>extension_loaded</function> uses the internal extension name
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to test whether a certain extension is available or not. Most internal
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extension names are written in lower case but there may be extension
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available which also use uppercase letters. Be warned that this
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function compares <emphasis role="strong">case sensitive</emphasis> !
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</para>
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</note>
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<para>
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See also
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<function>get_loaded_extensions</function>,
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<function>get_extension_funcs</function>,
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<function>phpinfo</function>, and
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<function>dl</function>.
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"../../../../manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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