(PHP 4 >= 4.3.3, PHP 5)
snmp_get_valueretrieval — Return the method how the SNMP values will be returned
OR-ed combitantion of constants ( SNMP_VALUE_LIBRARY or SNMP_VALUE_PLAIN ) with possible SNMP_VALUE_OBJECT set.
Example #1 Using snmp_get_valueretrieval
<?php
$ret = snmpget('localhost', 'public', 'IF-MIB::ifName.1');
if (snmp_get_valueretrieval() & SNMP_VALUE_OBJECT) {
echo $ret->value;
} else {
echo $ret;
}