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SNMP::walk

(PHP 5 >= 5.4.0, PHP 7)

SNMP::walkFetch SNMP object subtree

Descrierea

public SNMP::walk ( array|string $objectId , bool $suffixAsKey = false , int $maxRepetitions = -1 , int $nonRepeaters = -1 ) : array|bool

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

Parametri

objectId

Root of subtree to be fetched

suffixAsKey

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.

nonRepeaters

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

maxRepetitions

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

Valorile întoarse

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.

Erori/Excepții

Această metodă nu emite careva excepții în mod implicit. Pentru a activa emiterea unei excepții SNMPException când au loc erori în bibliotecă trebuie stabilită o valoare corespunzătoare a parametrului clasei SNMP exceptions_enabled. Vedeți explicația SNMP::$exceptions_enabled pentru mai multe detalii.

Exemple

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();
?>

Exemplul de mai sus va afișa ceva similar cu:

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 suffixAsKey example

suffixAsKey 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);
?>

Exemplul de mai sus va afișa ceva similar cu:

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)
)

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