Fetch all the SNMP objects from an agent

# snmp2_walk

(PHP >= 5.2.0, PHP 7, PHP 8)

snmp2_walk — Fetch all the SNMP objects from an agent

### 说明

function snmp2_walk(
string `$hostname`,
string `$community`,
array|string `$object_id`,
int `$timeout` = -1,
int `$retries` = -1
): array|false

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

### 参数

`hostname`
  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.

### 示例

示例 #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

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