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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.7 $ -->
<!-- splitted from ./en/functions/sockets.xml, last change in rev 1.8 -->
<refentry id="function.socket-strerror">
<refnamediv>
<refname>socket_strerror</refname>
<refpurpose>Return a string describing a socket error</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>string</type><methodname>socket_strerror</methodname>
<methodparam><type>int</type><parameter>errno</parameter></methodparam>
</methodsynopsis>
<para>
<function>socket_strerror</function> takes as its
<parameter>errno</parameter> parameter a socket error code as returned by
<function>socket_last_error</function> and returns the corresponding
explanatory text. This makes it a bit more pleasant to figure out why
something didn't work; for instance, instead of having to track down a
system include file to find out what '-111' means, you just pass it to
<function>socket_strerror</function>, and it tells you what happened.
</para>
<para>
<example>
<title><function>socket_strerror</function> example</title>
<programlisting role="php">
<![CDATA[
<?php
if (false == ($socket = @socket_create(AF_INET, SOCK_STREAM, SOL_TCP))) {
echo "socket_create() failed: reason: " . socket_strerror(socket_last_error()) . "\n";
}
if (false == (@socket_bind($socket, '127.0.0.1', 80))) {
echo "socket_bind() failed: reason: " . socket_strerror(socket_last_error($socket)) . "\n";
}
?>
]]>
</programlisting>
<para>
The expected output from the above example (assuming the script
is not run with root privileges):
</para>
<screen>
socket_bind() failed: reason: Permission denied
</screen>
</example>
</para>
<para>
See also
<function>socket_accept</function>,
<function>socket_bind</function>,
<function>socket_connect</function>,
<function>socket_listen</function>, and
<function>socket_create</function>.
</para>
</refsect1>
</refentry>
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-->
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