mirror of
https://github.com/sigmasternchen/php-doc-en
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3739ac5804
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@284289 c90b9560-bf6c-de11-be94-00142212c4b1
80 lines
2.5 KiB
XML
80 lines
2.5 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.flush">
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<refnamediv>
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<refname>flush</refname>
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<refpurpose>Flush the output buffer</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>void</type><methodname>flush</methodname>
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<void/>
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</methodsynopsis>
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<para>
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Flushes the write buffers of PHP and whatever backend PHP is using (CGI,
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a web server, etc). This attempts to push current output all the way to
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the browser with a few caveats.
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</para>
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<para>
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<function>flush</function> may not be able to override the buffering scheme
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of your web server and it has no effect on any client-side buffering in the
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browser. It also doesn't affect PHP's userspace output buffering mechanism.
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This means you will have to call both <function>ob_flush</function> and
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<function>flush</function> to flush the ob output buffers if you are using
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those.
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</para>
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<para>
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Several servers, especially on Win32, will still buffer the output from
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your script until it terminates before transmitting the results to the
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browser.
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</para>
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<para>
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Server modules for Apache like mod_gzip may do buffering of their own that
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will cause <function>flush</function> to not result in data being sent
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immediately to the client.
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</para>
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<para>
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Even the browser may buffer its input before displaying it. Netscape, for
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example, buffers text until it receives an end-of-line or the beginning of
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a tag, and it won't render tables until the </table> tag of the
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outermost table is seen.
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</para>
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<para>
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Some versions of Microsoft Internet Explorer will only start to display
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the page after they have received 256 bytes of output, so you may need to
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send extra whitespace before flushing to get those browsers to display the
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page.
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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&return.void;
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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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