mirror of
https://github.com/sigmasternchen/php-doc-en
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cb0630b149
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@312956 c90b9560-bf6c-de11-be94-00142212c4b1
130 lines
3.2 KiB
XML
130 lines
3.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<phpdoc:varentry xmlns:phpdoc="http://php.net/ns/phpdoc" xml:id="reserved.variables.environment" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>$_ENV</refname>
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<refname>$HTTP_ENV_VARS [deprecated]</refname>
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<refpurpose>Environment variables</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<para>
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An associative <type>array</type> of variables passed to the current script
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via the environment method.
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</para>
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<simpara>
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These variables are imported into PHP's global namespace from the
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environment under which the PHP parser is running. Many are
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provided by the shell under which PHP is running and different
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systems are likely running different kinds of shells, a
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definitive list is impossible. Please see your shell's
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documentation for a list of defined environment variables.
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</simpara>
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<simpara>
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Other environment variables include the CGI variables, placed
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there regardless of whether PHP is running as a server module or
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CGI processor.
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</simpara>
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<simpara>
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<varname>$HTTP_ENV_VARS</varname> contains the same initial
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information, but is not a <link linkend="language.variables.superglobals">superglobal</link>.
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(Note that <varname>$HTTP_ENV_VARS</varname> and <varname>$_ENV</varname>
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are different variables and that PHP handles them as such)
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</simpara>
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</refsect1>
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<refsect1 role="changelog">
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&reftitle.changelog;
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<para>
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>4.1.0</entry>
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<entry>
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Introduced <varname>$_ENV</varname> that deprecated
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<varname>$HTTP_ENV_VARS</varname>.
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example xml:id="variable.env.basic">
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<title><varname>$_ENV</varname> example</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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echo 'My username is ' .$_ENV["USER"] . '!';
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?>
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]]>
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</programlisting>
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<simpara>
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Assuming "bjori" executes this script
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</simpara>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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My username is bjori!
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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="notes">
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&reftitle.notes;
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¬e.is-superglobal;
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>getenv</function></member>
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<member><link linkend="book.filter">The filter extension</link></member>
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</simplelist>
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</para>
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</refsect1>
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</phpdoc:varentry>
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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:"~/.phpdoc/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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