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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.5 $ -->
<!-- splitted from ./en/functions/snmp.xml, last change in rev 1.2 -->
<refentry id="function.snmpwalk">
<refnamediv>
<refname>snmpwalk</refname>
<refpurpose>Fetch all the SNMP objects from an agent</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<methodsynopsis>
<type>array</type><methodname>snmpwalk</methodname>
<methodparam><type>string</type><parameter>hostname</parameter></methodparam>
<methodparam><type>string</type><parameter>community</parameter></methodparam>
<methodparam><type>string</type><parameter>object_id</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>timeout</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>retries</parameter></methodparam>
</methodsynopsis>
<para>
Returns an array of SNMP object values starting from the
<parameter>object_id</parameter> as root and &false; on error.
</para>
<para>
<function>snmpwalk</function> function is used to read all the
values from an SNMP agent specified by the
<parameter>hostname</parameter>. <parameter>Community</parameter>
specifies the read community for that agent. A &null;
<parameter>object_id</parameter> is taken as the root of the SNMP
objects tree and all objects under that tree are returned as an
array. If <parameter>object_id</parameter> is specified, all the
SNMP objects below that <parameter>object_id</parameter> are
returned.
<informalexample>
<programlisting role="php">
<![CDATA[
<?php
$a = snmpwalk("127.0.0.1", "public", "");
?>
]]>
</programlisting>
</informalexample>
</para>
<para>
Above function call would return all the SNMP objects from the
SNMP agent running on localhost. One can step through the values
with a loop
<informalexample>
<programlisting role="php">
<![CDATA[
<?php
foreach ($a as $val) {
echo "$val\n";
}
?>
]]>
</programlisting>
</informalexample>
</para>
</refsect1>
</refentry>
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