# snmp2_walk

(PHP >= 5.2.0)

snmp2_walk — Fetch all the SNMP objects from an agent

### 说明

snmp2_walk ( string `$host` , string `$community` , string `$object_id` [, int `$timeout` = 1000000 [, int `$retries` = 5 ]] ) : array

snmp2_walk() function is used to read all the values from an SNMP agent specified by the `hostname`.

### 参数

`host`

  The SNMP agent (server).

`community`

  The read community.

`object_id`

  If `NULL`, `object_id` is taken as the root of the SNMP objects tree and all objects under that tree are returned as an array.

  If `object_id` is specified, all the SNMP objects below that `object_id` are returned.

`timeout`

  The number of microseconds until the first timeout.

`retries`

  The number of times to retry if timeouts occur.

### 返回值

Returns an array of SNMP object values starting from the `object_id` as root or `FALSE` on error.

### 范例

Example #1 snmp2_walk() Example

    <?php
    $a = snmp2_walk("127.0.0.1", "public", "");

    foreach ($a as $val) {
        echo "$val\n";
    }

    ?>

Above function call would return all the SNMP objects from the SNMP agent running on localhost. One can step through the values with a loop

### 参见

- snmp2_real_walk() - Return all objects including their respective object ID within the specified one