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PHP SNMP::__construct

PHP original manual for SNMP::__construct [ show | php.net ]

SNMP::__construct

(PHP 5 >= 5.4.0, PHP 7)

SNMP::__construct — Creates SNMP instance representing session to remote SNMP agent

Description

public SNMP::__construct ( int $version , string $hostname , string $community [, int $timeout = 1000000 [, int $retries = 5 ]] )

The function description goes here.

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 library, not by Net-SNMP engine. Usage of IPv6 addresses when specifying FQDN may be forced by enclosing FQDN into square brackets. Here it is some examples:

IPv4 with default port127.0.0.1
IPv6 with default port::1 or [::1]
IPv4 with specific port127.0.0.1:1161
IPv6 with specific port[::1]:1161
FQDN with default porthost.domain
FQDN with specific porthost.domain:1161
FQDN with default port, force usage of IPv6 address[host.domain]
FQDN with specific port, force usage of IPv6 address[host.domain]:1161

community

The purpuse of community is SNMP version specific:

SNMP::VERSION_1SNMP community
SNMP::VERSION_2CSNMP community
SNMP::VERSION_3SNMPv3 securityName
timeout

The number of microseconds until the first timeout.

retries

The number of retries in case timeout occurs.

Return Values

Returns SNMP object representing remote SNMP agent.

Errors/Exceptions

SNMP::__construct() throws an exception when parameters count or types are wrong or unknown SNMP protocol version specified.

Examples

Example #1 Fetching sysLocation

<?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:

STRING: Test server

See Also