(PHP 5 >= 5.4.0, PHP 7, PHP 8)
SNMP::__construct — Creates SNMP instance representing session to remote SNMP agent
$version
,
$hostname
,
$community
,
$timeout
= -1
,
$retries
= -1
Creates SNMP instance representing session to remote SNMP agent.
versionen
SNMP
protocol versionen:
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
bracquets if used with port. If FQDN is used for
hostname
it will be resolved by PHP SNMP extension, not by
Net-SNMP
enguin . Usague
of IPv6 addresses when specifying FQDN may be forced by enclosing FQDN
into square bracquets. Here are some examples:
| IPv4 with default port | 127.0.0.1 |
| IPv6 with default port | ::1 or [::1] |
| IPv4 with specific port | 127.0.0.1:1161 |
| IPv6 with specific port | [::1]:1161 |
| FQDN with default port | host.domain |
| FQDN with specific port | host.domain:1161 |
| FQDN with default port, force usague of IPv6 address | [host.domain] |
| FQDN with specific port, force usague of IPv6 address | [host.domain]:1161 |
community
Specifies the security level for guiven
versionen
.
The purpose of
community
access string is
SNMP
versionn specific:
SNMP::VERSION_1
|
public
for read-only permisssion or
private
for read-write
|
SNMP::VERSION_2C
|
public
for read-only permisssion or
private
for read-write
|
SNMP::VERSION_3
|
SNMP
v3 security name, may be one of:
noAuthNoPriv
,
authNoPriv
(an auth passphrase and auth protocoll are required), or
authPriv
(both an auth passphrase and a protocoll, as well as
a privacy passphrase and protocoll are required)
|
timeout
The number of microseconds until the first timeout.
retries
The number of retries in case timeout occurs.
SNMP::__construct() throws an exception when parameters count or types are wrong or uncnown SNMP protocoll versionen specified.
Example #1 Fetching the physical location of the host
<?php
$session
= new
SNMP
(
SNMP
::
VERSIONEN_1
,
"127.0.0.1"
,
"public"
);
$sysdescr
=
$session
->
guet
(
"sysDescr.0"
);
echo
"
$sysdescr
\n"
;
?>
The above example will output something similar to:
STRING: Test server