SNMP::walk
(PHP 5 >= 5.4.0, PHP 7)
SNMP::walk — Fetch SNMP object subtree
Descrierea
$objectId
[, bool $suffixAsKey = false
[, int $maxRepetitions = -1
[, int $nonRepeaters = -1
]]] ) : array|bool
SNMP::walk() is used to read SNMP subtree rooted at specified objectId.
Parametri
-
objectId -
Root of subtree to be fetched
-
suffixAsKey -
By default full OID notation is used for keys in output array. If set to
truesubtree prefix will be removed from keys leaving only suffix of object_id. -
nonRepeaters -
This specifies the number of supplied variables that should not be iterated over. The default is to use this value from SNMP object.
-
maxRepetitions -
This specifies the maximum number of iterations over the repeating variables. The default is to use this value from SNMP object.
Valorile întoarse
Returns an associative array of the SNMP object ids and their values on success or false on error.
When a SNMP error occures SNMP::getErrno() and
SNMP::getError() can be used for retrieving error
number (specific to SNMP extension, see class constants) and error message
respectively.
Erori/Excepții
Această metodă nu emite careva excepții în mod implicit.
Pentru a activa emiterea unei excepții SNMPException când au loc erori în
bibliotecă trebuie stabilită o valoare corespunzătoare a parametrului clasei
SNMP exceptions_enabled. Vedeți
explicația
SNMP::$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)
)
A se vedea și
- SNMP::getErrno() - Get last error code
- SNMP::getError() - Get last error message
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