(PHP >= 5.2.0)
snmp2_getnext — Fetch the SNMP object which follows the given object id
$host
   , string $community
   , string $object_id
   [, string $timeout = 1000000
   [, string $retries = 5
  ]] )
   The snmp2_get_next() function is used to read the
   value of the SNMP object that follows the specified
   object_id.
  
host
    The hostname of the SNMP agent (server).
community
    The read community.
object_id
    The SNMP object id which precedes the wanted one.
timeout
    The number of microseconds until the first timeout.
retries
    The number of times to retry if timeouts occur.
   Returns SNMP object value on success or FALSE on error.
   In case of an error, an E_WARNING message is shown.
  
Example #1 Using snmp2_get_next()
<?php
$nameOfSecondInterface = snmp2_get_netxt('localhost', 'public', 'IF-MIB::ifName.1';
?>