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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.11 $ -->
<section xml:id="zlib.configuration" xmlns="http://docbook.org/ns/docbook">
&reftitle.runtime;
&extension.runtime;
<para>
The zlib extension offers the option to transparently compress
your pages on-the-fly, if the requesting browser supports
this. Therefore there are three options in the <link
linkend="configuration.file">configuration file</link> &php.ini;.
<table>
<title>Zlib Configuration Options</title>
<tgroup cols="4">
<thead>
<row>
<entry>Name</entry>
<entry>Default</entry>
<entry>Changeable</entry>
<entry>Changelog</entry>
</row>
</thead>
<tbody>
<row>
<entry>zlib.output_compression</entry>
<entry>"0"</entry>
<entry>PHP_INI_ALL</entry>
<entry>Available since PHP 4.0.5.</entry>
</row>
<row>
<entry>zlib.output_compression_level</entry>
<entry>"-1"</entry>
<entry>PHP_INI_ALL</entry>
<entry>Available since PHP 4.3.0.</entry>
</row>
<row>
<entry>zlib.output_handler</entry>
<entry>""</entry>
<entry>PHP_INI_ALL</entry>
<entry>Available since PHP 4.3.0.</entry>
</row>
</tbody>
</tgroup>
</table>
&ini.php.constants;
</para>
&ini.descriptions.title;
<para>
<variablelist>
<varlistentry xml:id="ini.zlib.output-compression">
<term>
<parameter>zlib.output_compression</parameter>
<type>boolean</type>/<type>integer</type>
</term>
<listitem>
<para>
Whether to transparently compress pages. If this option is set
to "On" in &php.ini; or the Apache configuration, pages are
compressed if the browser sends an "Accept-Encoding: gzip" or
"deflate" header. "Content-Encoding: gzip" (respectively
"deflate") and "Vary: Accept-Encoding" headers are added to
the output.
In runtime, it can be set only before sending any output.
</para>
<para>
This option also accepts integer values instead of boolean
"On"/"Off", using this you can set the output buffer size
(default is 4KB).
</para>
<note>
<para>
<link linkend="ini.output-handler">output_handler</link> must be
empty if this is set 'On' ! Instead you must use zlib.output_handler.
</para>
</note>
</listitem>
</varlistentry>
<varlistentry xml:id="ini.zlib.output-compression-level">
<term>
<parameter>zlib.output_compression_level</parameter>
<type>integer</type>
</term>
<listitem>
<para>
Compression level used for transparent output compression.
</para>
</listitem>
</varlistentry>
<varlistentry xml:id="ini.zlib.output-handler">
<term>
<parameter>zlib.output_handler</parameter>
<type>string</type>
</term>
<listitem>
<para>
You cannot specify additional output handlers if zlib.output_compression
is activated here. This setting does the same as <link linkend="ini.output-handler">
output_handler</link> but in a different order.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</section>
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sgml-shorttag:t
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sgml-always-quote-attributes:t
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sgml-parent-document:nil
sgml-default-dtd-file:"../../../manual.ced"
sgml-exposed-tags:nil
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End:
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vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->
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