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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision: 313913 $ -->
<refentry xml:id="function.snmp3-walk" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
<refnamediv>
<refname>snmp3_walk</refname>
<refpurpose>Fetch all the <acronym>SNMP</acronym> objects from an agent</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>array</type><methodname>snmp3_walk</methodname>
<methodparam><type>string</type><parameter>host</parameter></methodparam>
<methodparam><type>string</type><parameter>sec_name</parameter></methodparam>
<methodparam><type>string</type><parameter>sec_level</parameter></methodparam>
<methodparam><type>string</type><parameter>auth_protocol</parameter></methodparam>
<methodparam><type>string</type><parameter>auth_passphrase</parameter></methodparam>
<methodparam><type>string</type><parameter>priv_protocol</parameter></methodparam>
<methodparam><type>string</type><parameter>priv_passphrase</parameter></methodparam>
<methodparam><type>string</type><parameter>object_id</parameter></methodparam>
<methodparam choice="opt"><type>string</type><parameter>timeout</parameter><initializer>1000000</initializer></methodparam>
<methodparam choice="opt"><type>string</type><parameter>retries</parameter><initializer>5</initializer></methodparam>
</methodsynopsis>
<para>
<function>snmp3_walk</function> function is used to read all the values from
an <acronym>SNMP</acronym> agent specified by the <parameter>hostname</parameter>.
</para>
<para>
Even if the security level does not use an auth or priv protocol/password valid values have to be specified.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<variablelist>
<varlistentry>
<term><parameter>host</parameter></term>
<listitem>
<para>
The hostname of the SNMP agent (server).
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>sec_name</parameter></term>
<listitem>
<para>
the security name, usually some kind of username
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>sec_level</parameter></term>
<listitem>
<para>
the security level (noAuthNoPriv|authNoPriv|authPriv)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>auth_protocol</parameter></term>
<listitem>
<para>
the authentication protocol (MD5 or SHA)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>auth_passphrase</parameter></term>
<listitem>
<para>
the authentication pass phrase
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>priv_protocol</parameter></term>
<listitem>
<para>
the privacy protocol (DES or AES)
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>priv_passphrase</parameter></term>
<listitem>
<para>
the privacy pass phrase
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>object_id</parameter></term>
<listitem>
<para>
If &null;, <parameter>object_id</parameter> is taken as the root of
the <acronym>SNMP</acronym> objects tree and all objects under that tree are returned as
an array.
</para>
<para>
If <parameter>object_id</parameter> is specified, all the <acronym>SNMP</acronym> objects
below that <parameter>object_id</parameter> are returned.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>timeout</parameter></term>
<listitem>
<para>
The number of microseconds until the first timeout.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>retries</parameter></term>
<listitem>
<para>
The number of times to retry if timeouts occur.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns an array of <acronym>SNMP</acronym> object values starting from the
<parameter>object_id</parameter> as root or &false; on error.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>snmp3_walk</function> Example</title>
<programlisting role="php">
<![CDATA[
<?php
$ret = snmp3_walk('localhost', 'james', 'authPriv', 'SHA', 'secret007', 'AES', 'secret007', 'IF-MIB::ifName');
var_export($ret);
?>
]]>
</programlisting>
</example>
</para>
<para>
Above function call would return all the <acronym>SNMP</acronym> objects from the
<acronym>SNMP</acronym> agent running on localhost:
<![CDATA[
array (
0 => 'STRING: lo',
1 => 'STRING: eth0',
2 => 'STRING: eth2',
3 => 'STRING: sit0',
4 => 'STRING: sixxs',
)
]]>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>snmp3_real_walk</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
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