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# CXIV. SNMP Functions

# 介紹

# 需求

In order to use the SNMP functions on Unix you need to install the NET-SNMP package. On Windows these functions are only available on NT and not on Win95/98.

# 安裝

Important: In order to use the UCD SNMP package, you need to define NO_ZEROLENGTH_COMMUNITY to 1 before compiling it. After configuring UCD SNMP, edit `config.h` and search for NO_ZEROLENGTH_COMMUNITY. Uncomment the #define line. It should look like this afterwards:

    #define NO_ZEROLENGTH_COMMUNITY 1

Now compile PHP --with-snmp[=DIR].

If you see strange segmentation faults in combination with SNMP commands, you did not follow the above instructions. If you do not want to recompile UCD SNMP, you can compile PHP with the --enable-ucd-snmp-hack switch which will work around the misfeature.

The Windows distribution contains support files for SNMP in the `mibs` directory. This directory should be moved to `DRIVE:\usr\mibs`, where DRIVE must be replaced with the driveletter where PHP is installed on, e.g.`c:\usr\mibs`.

# 執行時期組態

`php.ini`中沒有定義此延伸的組態指令。

# 資源類型

# 預先定義常數

以下的常數由此延伸定義，只在這個延伸被編譯成PHP或實行時期被動態載入時有效。

`SNMP_VALUE_LIBRARY` (integer)

`SNMP_VALUE_PLAIN` (integer)

`SNMP_VALUE_OBJECT` (integer)

`SNMP_BIT_STR` (integer)

`SNMP_OCTET_STR` (integer)

`SNMP_OPAQUE` (integer)

`SNMP_NULL` (integer)

`SNMP_OBJECT_ID` (integer)

`SNMP_IPADDRESS` (integer)

`SNMP_COUNTER` (integer)

`SNMP_UNSIGNED` (integer)

`SNMP_TIMETICKS` (integer)

`SNMP_UINTEGER` (integer)

`SNMP_INTEGER` (integer)

`SNMP_COUNTER64` (integer)

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