mirror of
https://github.com/sigmasternchen/php-doc-en
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0f553e8585
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@95962 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: 1.4 $ -->
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<!-- splitted from ./en/functions/http.xml, last change in rev 1.7 -->
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<refentry id="function.headers-sent">
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<refnamediv>
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<refname>headers_sent</refname>
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<refpurpose>Returns &true; if headers have been sent</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>headers_sent</methodname>
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<methodparam><type>string</type><parameter>&file</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>&line</parameter></methodparam>
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</methodsynopsis>
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<para>
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This function returns &true; if the HTTP headers have already been
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sent, &false; otherwise. You can't add any more header lines using
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the <function>header</function> function once the header block has
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already been sent. Using this function you can at least prevent
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getting the "Duplicate headers ..." error messages.
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</para>
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<para>
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The function will return the php source file and line number where
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output started in the optional <parameter>file</parameter> and
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<parameter>line</parameter> parameters if these are given.
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</para>
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<note>
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<simpara>
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<parameter>file</parameter> and <parameter>line</parameter> where
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added for PHP 4.3.0.
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</simpara>
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</note>
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<para>
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See also <function>header</function> for a more detailed discussion
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of the matters involved.
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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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