mirror of
https://github.com/sigmasternchen/php-doc-en
synced 2025-03-15 08:28:54 +00:00
a3bb15df3f
The "Hacker's guide" is grossly outdated (it is about ZendEngine 2; some stuff even about ZE1, although ZE4 is current), and nobody is working on it for years. Therefore we remove this part of the manual; users are better off reading external resources, such as <http://www.phpinternalsbook.com/>. Closes GH-152.
91 lines
3.2 KiB
XML
91 lines
3.2 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
|
|
<book xml:id="book.stream" xmlns="http://docbook.org/ns/docbook">
|
|
<?phpdoc extension-membership="core" ?>
|
|
<title>Streams</title>
|
|
|
|
<preface xml:id="intro.stream">
|
|
&reftitle.intro;
|
|
<simpara>
|
|
Streams are
|
|
the way of generalizing file, network, data compression, and other
|
|
operations which share a common set of functions and uses. In
|
|
its simplest definition, a <literal>stream</literal> is a
|
|
<literal>resource</literal> object which exhibits streamable
|
|
behavior. That is, it can be read from or written to in a linear
|
|
fashion, and may be able to <function>fseek</function> to an
|
|
arbitrary location within the stream.
|
|
</simpara>
|
|
<simpara>
|
|
A <literal>wrapper</literal> is additional code which tells the stream how to handle
|
|
specific protocols/encodings. For example, the <literal>http</literal>
|
|
wrapper knows how to translate a URL into an <literal>HTTP/1.0</literal>
|
|
request for a file on a remote server. There are many wrappers
|
|
built into PHP by default (See <xref linkend="wrappers"/>),
|
|
and additional, custom wrappers may be added either within a
|
|
PHP script using <function>stream_wrapper_register</function>,
|
|
or directly from an extension.
|
|
Because any variety of wrapper may be added to PHP,
|
|
there is no set limit on what can be done with them. To access the list
|
|
of currently registered wrappers, use <function>stream_get_wrappers</function>.
|
|
</simpara>
|
|
<para>
|
|
A stream is referenced as: <parameter>scheme</parameter>://<parameter>target</parameter>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<simpara>
|
|
<parameter>scheme</parameter>(string) -
|
|
The name of the wrapper to be used. Examples include: file,
|
|
http, https, ftp, ftps, compress.zlib, compress.bz2, and php. See
|
|
<xref linkend="wrappers"/> for a list of PHP built-in wrappers. If
|
|
no wrapper is specified, the function default is used (typically
|
|
<literal>file</literal>://).
|
|
</simpara>
|
|
</listitem>
|
|
<listitem>
|
|
<simpara>
|
|
<parameter>target</parameter> -
|
|
Depends on the wrapper used. For filesystem related streams this is
|
|
typically a path and filename of the desired file. For network related
|
|
streams this is typically a hostname, often with a path appended. Again, see
|
|
<xref linkend="wrappers"/> for a description of targets for built-in streams.
|
|
</simpara>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</para>
|
|
</preface>
|
|
|
|
&reference.stream.setup;
|
|
&reference.stream.constants;
|
|
&reference.stream.filters;
|
|
&reference.stream.contexts;
|
|
&reference.stream.errors;
|
|
&reference.stream.examples;
|
|
&reference.stream.php-user-filter;
|
|
&reference.stream.streamwrapper;
|
|
&reference.stream.reference;
|
|
|
|
</book>
|
|
|
|
<!-- Keep this comment at the end of the file
|
|
Local variables:
|
|
mode: sgml
|
|
sgml-omittag:t
|
|
sgml-shorttag:t
|
|
sgml-minimize-attributes:nil
|
|
sgml-always-quote-attributes:t
|
|
sgml-indent-step:1
|
|
sgml-indent-data:t
|
|
indent-tabs-mode:nil
|
|
sgml-parent-document:nil
|
|
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
|
|
sgml-exposed-tags:nil
|
|
sgml-local-catalogs:nil
|
|
sgml-local-ecat-files:nil
|
|
End:
|
|
vim600: syn=xml fen fdm=syntax fdl=2 si
|
|
vim: et tw=78 syn=sgml
|
|
vi: ts=1 sw=1
|
|
-->
|
|
|