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    SNMP::walk

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

    SNMP::walk — Fetch SNMP object subtree

    Descrizione

    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.

    Elenco dei 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.

    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 visualizzerà 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 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);
    ?>

    Il precedente esempio visualizzerà 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:

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