SNMP::__construct
(PHP 5 >= 5.4.0, PHP 7, PHP 8)
SNMP::__construct — Creates SNMP instance representing session to remote SNMP agent
Description
public function SNMP::__construct(
int $version,
string $hostname,
string $community,
int $timeout = -1,
int $retries = -1)
Creates SNMP instance representing session to remote SNMP agent.
Parameters
version-
SNMP protocol version:
SNMP::VERSION_1,
SNMP::VERSION_2C,
SNMP::VERSION_3.
hostname-
The SNMP agent. hostname may be suffixed with
optional SNMP agent port after colon. IPv6 addresses must be enclosed in square
brackets if used with port. If FQDN is used for hostname
it will be resolved by PHP SNMP extension, not by
Net-SNMP engine. Usage
of IPv6 addresses when specifying FQDN may be forced by enclosing FQDN
into square brackets. Here are some examples:
community-
The community string, or, for SNMP::VERSION_3, the
security name. The purpose of the community access
string is SNMP version specific:
SNMPv3 requires to configure security-related session parameters with
the SNMP::setSecurity() method.
timeout-
The number of microseconds until the first timeout.
retries-
The number of retries in case timeout occurs.
Errors/Exceptions
SNMP::__construct() throws an exception when
parameters count or types are wrong or unknown SNMP
protocol version specified.
Examples
Example #1 Fetching the physical location of the host
<?php
$session = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
$sysdescr = $session->get("sysDescr.0");
echo "$sysdescr\n";
?>
The above example will output
something similar to:
SNMP::close
SNMP