php-cli的错误信息能否屏蔽

[zjgxwx]

我在用php-cli做网络设备的snmp信息采集,因为用到snmp,需要开启php_snmp.dll这个扩展
但是开了这个扩展后他会自动到指定目录去找mib文件,找不到的时候会出现如下错误:
MIB search path: C:/usr/share/snmp/mibs
Cannot find module (IP-MIB): At line 0 in (none)
Cannot find module (IF-MIB): At line 0 in (none)
Cannot find module (TCP-MIB): At line 0 in (none)
Cannot find module (UDP-MIB): At line 0 in (none)
Cannot find module (HOST-RESOURCES-MIB): At line 0 in (none)
Cannot find module (SNMPv2-MIB): At line 0 in (none)
Cannot find module (SNMPv2-SMI): At line 0 in (none)
Cannot find module (NOTIFICATION-LOG-MIB): At line 0 in (none)
Cannot find module (UCD-SNMP-MIB): At line 0 in (none)
Cannot find module (UCD-DEMO-MIB): At line 0 in (none)
Cannot find module (SNMP-TARGET-MIB): At line 0 in (none)
Cannot find module (NET-SNMP-AGENT-MIB): At line 0 in (none)
Cannot find module (DISMAN-EVENT-MIB): At line 0 in (none)
Cannot find module (SNMP-VIEW-BASED-ACM-MIB): At line 0 in (none)
Cannot find module (SNMP-COMMUNITY-MIB): At line 0 in (none)
Cannot find module (SNMP-FRAMEWORK-MIB): At line 0 in (none)
Cannot find module (SNMP-MPD-MIB): At line 0 in (none)
Cannot find module (SNMP-USER-BASED-SM-MIB): At line 0 in (none)
Cannot find module (SNMP-NOTIFICATION-MIB): At line 0 in (none)
Cannot find module (SNMPv2-TM): At line 0 in (none)

这个扩展其实可以不需要net-snmp而单独工作,安装net-snmp后会把mib库文件安装到这个目录中,就不会出现上述错误,但是有了这个库后,发现用php snmp2_get()到的信息就会有变化:
原来取的交换机端口状态:
1.3.6.1.2.1.2.2.1.8.285278721 = INTEGER: 1
会变成
1.3.6.1.2.1.2.2.1.8.285278721 = INTEGER: up(1)

这个就是根据库信息对输出对了处理,但是这样处理后反而不好取我想要的数据,我其实就想取到数字1就可以了.
那么我的问题就是能不能不安装net-snmp,不出现上述找不到mib库的错误信息

[zjgxwx]

发现snmp_set_valueretrieval(SNMP_VALUE_PLAIN)可以对返回值类型进行调整.