Edit Report a Bug

    SNMP::__construct

    (PHP 5 >= 5.4.0, PHP 7, PHP 8)

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

    Description

    public SNMP::__construct(
        int $version,
        string $hostname,
        string $community,
        int $timeout = -1,
        int $retries = -1
    )

    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.

    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

    add a note add a note

    User Contributed Notes 1 note

    up
    0
    GF
    10 years ago
    <?php
      $session     = new SNMP(SNMP::VERSION_1, "127.0.0.1", "public");
          $sysdescr = $session->get("sysDescr.0");
      echo     "$sysdescr\n";
    ?>
    doesn't work for me, use it instead :
    <?php
      $version     = "3";   // snmp version "1", "2" or "2c", "3"
          $host = "127.0.0.1";   // hostname or ip
          $community = "public";   // snmp community

          $session = new SNMP($version, $host, $community);
          $sysdescr = $session->get("sysDescr.0");
      echo     "$sysdescr\n";
    ?>
    I don't use the snmp version 2 that's why i have written 2 or 2c, I'm not sure so test it.
    add a note add a note
    To Top