SNMP::walk

    (PHP 5 >= 5.4.0, PHP 7, PHP 8)

    SNMP::walk — Fetch SNMP object subtree

    Açıklama

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

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

    Bağımsız Değişkenler

    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.

    Dönen Değerler

    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.

    Hatalar/İstisnalar

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

    Örnekler

    Örnek 1 SNMP::walk() example

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

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    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
    ...
)

    Örnek 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);
    ?>

    Yukarıdaki örnek şuna benzer bir çıktı üretir:

    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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