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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@65957 c90b9560-bf6c-de11-be94-00142212c4b1
60 lines
2 KiB
XML
60 lines
2 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision: 1.13 $ -->
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<chapter id="features.cookies">
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<title>Cookies</title>
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<para>
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PHP transparently supports HTTP cookies. Cookies are a mechanism
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for storing data in the remote browser and thus tracking
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or identifying return users. You can set cookies using the
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<function>setcookie</function> function. Cookies are part of the
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HTTP header, so <function>setcookie</function> must be called before
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any output is sent to the browser. This is the same limitation that
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<function>header</function> has. You can use the <link
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linkend="ref.outcontrol">output buffering functions</link> to delay the
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script output until you have decided whether or not to set any cookies or
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send any headers.
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</para>
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<para>
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Any cookies sent to you from the client will automatically be turned into a
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PHP variable just like GET and POST method data, depending on the
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<literal>register_globals</literal> and <literal>variables_order</literal>
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configuration variables. If you wish to assign multiple values to a single
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cookie, just add <emphasis>[]</emphasis> to the cookie name.
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</para>
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<para>
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In PHP 4.1.0 and later, the <literal>$_COOKIE</literal> auto-global
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array will always be set with any cookies sent from the client.
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<literal>$HTTP_COOKIE_VARS</literal> is also set in earlier versions of PHP
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when the <literal>track_vars</literal> configuration variable is set.
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</para>
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<para>
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For more details, including notes on browser bugs, see the
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<function>setcookie</function> function.
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</para>
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</chapter>
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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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