php-doc-en/reference/sockets/functions/socket-read.xml
Jason Greene f381972021 Small corrections, and grammar fixes
git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@88089 c90b9560-bf6c-de11-be94-00142212c4b1
2002-07-08 17:11:05 +00:00

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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.4 $ -->
<!-- splitted from ./en/functions/sockets.xml, last change in rev 1.8 -->
<refentry id="function.socket-read">
<refnamediv>
<refname>socket_read</refname>
<refpurpose>Reads a maximum of length bytes from a socket</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>socket_read</methodname>
<methodparam><type>resource</type><parameter>socket</parameter></methodparam>
<methodparam><type>int</type><parameter>length</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>type</parameter></methodparam>
</methodsynopsis>
&warn.experimental.func;
<para>
The function <function>socket_read</function> reads from the socket
resource <parameter>socket</parameter> created by the
<function>socket_create</function> or
<function>socket_accept</function> functions. The maximum number of bytes read
is specified by the <parameter>length</parameter> parameter. Otherwise
you can use \r, \n, or \0 to end reading
(depending on the <parameter>type</parameter> parameter, see below).
</para>
<para>
<function>socket_read</function> returns the data as a string on success, or
&false; on error. The error code can be retrieved with <function>socket_last_error</function>.
This code may be passed to <function>socket_strerror</function> to get a textual
representation of the error.
</para>
<note>
<para>
<function>socket_read</function> may return a zero length string ("")
indicating the end of communication (i.e. the remote end point has
closed the connection).
</para>
</note>
<para>
Optional <parameter>type</parameter> parameter is a named constant:
<itemizedlist>
<listitem>
<simpara>
PHP_BINARY_READ - use the system <literal>read()</literal> function.
Safe for reading binary data. (Default in PHP
&gt;= 4.1.0)
</simpara>
</listitem>
<listitem>
<simpara>
PHP_NORMAL_READ - reading stops at \n or \r. (Default in PHP &lt;= 4.0.6)
</simpara>
</listitem>
</itemizedlist>
</para>
<para>
See also
<function>socket_accept</function>,
<function>socket_bind</function>,
<function>socket_connect</function>,
<function>socket_listen</function>,
<function>socket_last_error</function>,
<function>socket_strerror</function> and
<function>socket_write</function>.
</para>
</refsect1>
</refentry>
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