(PHP 5 >= 5.4.0)
SNMP::getnext — Fetch an SNMP object which follows the given object id
  If object_id is a string, then  SNMP::getnext()
  will return SNMP object as string. If
  object_id is a array, all requested SNMP
  objects will be returned as associative array of the SNMP object ids and their
  values. 
  
object_id
    The SNMP object (OID) or objects
   Returns SNMP objects requested as string or array
   depending on object_id type or FALSE on error.
  
 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.
Example #1 Single SNMP object
Single SNMP object may be requested in two ways: as string resulting string return value or as single-element array with associative array as output.
<?php
  $session = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
  $nsysdescr = $session->getnext("sysDescr.0");
  echo "$nsysdescr\n";
  $nsysdescr = $session->getnext(array("sysDescr.0"));
  print_r($nsysdescr);
?>
以上例程的输出类似于:
OID: NET-SNMP-MIB::netSnmpAgentOIDs.8
Array
(
    [SNMPv2-MIB::sysObjectID.0] => OID: NET-SNMP-MIB::netSnmpAgentOIDs.8
)
Example #2 Miltiple SNMP objects
<?php
  $session = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
  $results = $session->getnext(array("sysDescr.0", "sysName.0"));
  print_r($results);
  $session->close();
?>
以上例程的输出类似于:
Array
(
    [SNMPv2-MIB::sysObjectID.0] => OID: NET-SNMP-MIB::netSnmpAgentOIDs.8
    [SNMPv2-MIB::sysLocation.0] => STRING: Nowhere
)