SNMP
PHP Manual

SNMP::walk

(PHP 5 >= 5.4.0)

SNMP::walkFetch SNMP object subtree

Descrizione

public array SNMP::walk ( string $object_id [, bool $suffix_as_key = FALSE [, int $max_repetitions [, int $non_repeaters ]]] )

SNMP::walk() is used to read SNMP subtree rooted at specified object_id.

Elenco dei parametri

object_id

Root of subtree to be fetched

suffix_as_key

By default full OID notation is used for keys in output array. If set to TRUE subtree prefix will be removed from keys leaving only suffix of object_id.

non_repeaters

This specifies the number of supplied variables that should not be iterated over. The default is to use this value from SNMP object.

max_repetitions

This specifies the maximum number of iterations over the repeating variables. The default is to use this value from SNMP object.

Valori restituiti

Returns an associative array of the SNMP object ids and their values on success or FALSE on error. When a SNMP error occures SNMP::getErrno() and SNMP::getError() can be used for retrieving error number (specific to SNMP extension, see class constants) and error message respectively.

Errori/Eccezioni

This method does not throw any exceptions by default. To enable throwing an SNMPException exception when some of library errors occur the SNMP class parameter exceptions_enabled should be set to a corresponding value. See SNMP::$exceptions_enabled explanation for more details.

Esempi

Example #1 SNMP::walk() example

<?php
  $session 
= new SNMP(SNMP::VERSION_1"127.0.0.1""public");
  
$fulltree $session->walk(".");
  
print_r($fulltree);
  
$session->close();
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

Array
(
    [SNMPv2-MIB::sysDescr.0] => STRING: Test server
    [SNMPv2-MIB::sysObjectID.0] => OID: NET-SNMP-MIB::netSnmpAgentOIDs.8
    [DISMAN-EVENT-MIB::sysUpTimeInstance] => Timeticks: (1150681750) 133 days, 4:20:17.50
    [SNMPv2-MIB::sysContact.0] => STRING: Nobody
    [SNMPv2-MIB::sysName.0] => STRING: server.localdomain
    ...
)

Example #2 suffix_as_key example

suffix_as_key may be used when merging multiple SNMP subtrees into one. This example maps interface names to their type.

<?php
  $session 
= new SNMP(SNMP::VERSION_1"127.0.0.1""public");
  
$session->valueretrieval SNMP_VALUE_PLAIN;
  
$ifDescr $session->walk(".1.3.6.1.2.1.2.2.1.2"TRUE);
  
$session->valueretrieval SNMP_VALUE_LIBRARY;
  
$ifType $session->walk(".1.3.6.1.2.1.2.2.1.3"TRUE);
  
print_r($ifDescr);
  
print_r($ifType);
  
$result = array();
  foreach(
$ifDescr as $i => $n) {
    
$result[$n] = $ifType[$i];
  }
  
print_r($result);
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

Array
(
    [1] => igb0
    [2] => igb1
    [3] => ipfw0
    [4] => lo0
    [5] => lagg0
)
Array
(
    [1] => INTEGER: ieee8023adLag(161)
    [2] => INTEGER: ieee8023adLag(161)
    [3] => INTEGER: ethernetCsmacd(6)
    [4] => INTEGER: softwareLoopback(24)
    [5] => INTEGER: ethernetCsmacd(6)
)
Array
(
    [igb0] => INTEGER: ieee8023adLag(161)
    [igb1] => INTEGER: ieee8023adLag(161)
    [ipfw0] => INTEGER: ethernetCsmacd(6)
    [lo0] => INTEGER: softwareLoopback(24)
    [lagg0] => INTEGER: ethernetCsmacd(6)
)

Vedere anche:


SNMP
PHP Manual