I migrated a PHP application that uses a lot of SNMP MIB files to PHP 8 running on RHEL 9.5.

For whatever reason PHP 8 isn't automatically looking in /usr/share/snmp/mibs for the MIB files like PHP 7.2 did.

<?php

$host = "10.0.1.4";

$com = "redacted";

$oid = "ipRouteMask";

if ($arry = snmprealwalk ($host, $com, $oid)) {

echo "";

} else {

echo "Error, could not retrieve a list of routes from $host.";

die();

}

PHP Warning: snmprealwalk(): Invalid object identifier: ipRouteMask

If I add this to the code: snmp_read_mib('/usr/share/snmp/mibs/RFC1213-MIB.txt');

Does anyone know how I can tell PHP to just use the mibs that are in the well known mib directory?

I set this environment variable although I don't think it actually does anything (even on PHP cli) MIBDIRS=/usr/share/snmp/mibs

Any assistance would be appreciated