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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@177580 c90b9560-bf6c-de11-be94-00142212c4b1
66 lines
1.9 KiB
XML
66 lines
1.9 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.8 $ -->
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<!-- splitted from ./en/functions/info.xml, last change in rev 1.2 -->
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<refentry id="function.getenv">
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<refnamediv>
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<refname>getenv</refname>
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<refpurpose>Gets the value of an environment variable</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>string</type><methodname>getenv</methodname>
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<methodparam><type>string</type><parameter>varname</parameter></methodparam>
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</methodsynopsis>
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<para>
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Returns the value of the environment variable
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<parameter>varname</parameter>, or &false; on an error.
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<informalexample>
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<programlisting role="php">
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<![CDATA[
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<?php
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// Example use of getenv()
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$ip = getenv('REMOTE_ADDR');
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// Or simply use a Superglobal ($_SERVER or $_ENV)
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$ip = $_SERVER['REMOTE_ADDR'];
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?>
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]]>
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</programlisting>
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</informalexample>
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</para>
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<para>
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You can see a list of all the environmental variables by using
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<function>phpinfo</function>. You can find out what many of them
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mean by taking a look at the <ulink url="&url.cgispecs;">CGI
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specification</ulink>, specifically the <ulink
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url="&url.cgispec;">page on environmental variables</ulink>.
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</para>
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<para>
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See also <function>putenv</function>,
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<function>apache_getenv</function>&listendand;
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<link linkend="language.variables.superglobals">Superglobals</link>.
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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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