Query for a tree of information about a network entity

# snmpwalkoid

(PHP 4, PHP 5, PHP 7, PHP 8)

snmpwalkoid — Query for a tree of information about a network entity

### Description

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

snmpwalkoid() function is used to read all object ids and their respective values from an SNMP agent specified by `hostname`.

The existence of snmpwalkoid() and snmpwalk() has historical reasons. Both functions are provided for backward compatibility. Use snmprealwalk() instead.

### Parameters

`hostname`
  The SNMP agent.
`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.

### Return Values

Returns an associative array with object ids and their respective object value starting from the `object_id` as root or `false` on error.

### Examples

Example #1 snmpwalkoid() Example

`<?php
$a = snmpwalkoid("127.0.0.1", "public", "");
for (reset($a); $i = key($a); next($a)) {
echo "$i: $a[$i]<br />\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

### See Also

- snmpwalk() - Fetch all the SNMP objects from an agent

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