mirror of
https://github.com/sigmasternchen/php-doc-en
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git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@334605 c90b9560-bf6c-de11-be94-00142212c4b1
130 lines
4 KiB
XML
130 lines
4 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.socket-read">
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<refnamediv>
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<refname>socket_read</refname>
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<refpurpose>Reads a maximum of length bytes from a socket</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>string</type><methodname>socket_read</methodname>
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<methodparam><type>resource</type><parameter>socket</parameter></methodparam>
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<methodparam><type>int</type><parameter>length</parameter></methodparam>
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<methodparam choice="opt"><type>int</type><parameter>type</parameter><initializer>PHP_BINARY_READ</initializer></methodparam>
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</methodsynopsis>
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<para>
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The function <function>socket_read</function> reads from the socket
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resource <parameter>socket</parameter> created by the
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<function>socket_create</function> or
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<function>socket_accept</function> functions.
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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>socket</parameter></term>
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<listitem>
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<para>
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A valid socket resource created with <function>socket_create</function>
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or <function>socket_accept</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>length</parameter></term>
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<listitem>
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<para>
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The maximum number of bytes read is specified by the
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<parameter>length</parameter> parameter. Otherwise you can use
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<constant>\r</constant>, <constant>\n</constant>,
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or <constant>\0</constant> to end reading (depending on the <parameter>type</parameter>
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parameter, see below).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>type</parameter></term>
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<listitem>
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<para>
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Optional <parameter>type</parameter> parameter is a named constant:
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<itemizedlist>
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<listitem>
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<simpara>
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<constant>PHP_BINARY_READ</constant> (Default) - use the system
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<literal>recv()</literal> function. Safe for reading binary data.
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</simpara>
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</listitem>
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<listitem>
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<simpara>
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<constant>PHP_NORMAL_READ</constant> - reading stops at
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<literal>\n</literal> or <literal>\r</literal>.
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</simpara>
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</listitem>
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</itemizedlist>
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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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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<function>socket_read</function> returns the data as a string on success,
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or &false; on error (including if the remote host has closed the
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connection). The error code can be retrieved with
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<function>socket_last_error</function>. This code may be passed to
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<function>socket_strerror</function> to get a textual representation of
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the error.
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</para>
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<note>
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<para>
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<function>socket_read</function> returns a zero length string ("")
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when there is no more data to read.
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</para>
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</note>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>socket_accept</function></member>
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<member><function>socket_bind</function></member>
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<member><function>socket_connect</function></member>
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<member><function>socket_listen</function></member>
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<member><function>socket_last_error</function></member>
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<member><function>socket_strerror</function></member>
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<member><function>socket_write</function></member>
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</simplelist>
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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:"~/.phpdoc/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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