... PHP 3 <= 3.0.18, PHP 4 >= 4.0.0) snmpwalk -- Fetch all the SNMP objects from an agent . array snmpwalk ( string hostname, string community, string object_id [, int timeout [, int retries]]) . Returns an array of SNMP object values starting from the object_id() as root and FALSE on error. snmpwalk() function is used to read all the values from an SNMP agent specified by the hostname . ... Above function call would return all the SNMP objects from the SNMP agent running on localhost. ...