According to the official API documentation, you can reboot a droplet with the following curl request:

curl -X POST -H "Content-Type: application/json" \
             -H "Authorization: Bearer API_TOKEN_HERE" \
             -d '{"type":"reboot"}' \
             "https://api.digitalocean.com/v2/droplets/DROPLET_ID_HERE/actions"

• PHP example

To do the same thing with PHP you could use the following script:

<?php

// Update your API Token and Droplet ID here:
$api_token  = 'YOUR_TOKEN_HERE';
$droplet_id = 'YOUR_DROPLET_ID_HERE';

$data = array("type" => "reboot");
$data_string = json_encode($data);

$ch = curl_init('https://api.digitalocean.com/v2/droplets/' . $droplet_id . '/actions');

curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Authorization: Bearer ' . $api_token,
    'Content-Type: application/json',
    'Content-Length: ' . strlen($data_string))
);

$result = curl_exec($ch);
print_r($result);

?>

Quick rundown:

1. We first specify our API key and our Droplet ID as variables
2. We then specify the action that we would like to execute, in our case just a reboot
3. Then by the help with curl_init we prepare our URL, note that you would need to install php-curl in order to be able to do so
4. With curl_setopt we build up our CURL request
5. Lastly with curl_exec we trigger the POST request
6. With the print_r($result); we print the result back

• Python example

As an example I will use this Python module to manage digitalocean.com droplets:

https://www.digitalocean.com/community/tools/python-digitalocean

So just install it using php:

pip install -U python-digitalocean

Then the script would look something like this:

import digitalocean
manager = digitalocean.Manager(token="YOUR_TOKEN_HERE")
droplet = manager.get_droplet(droplet_id="YOUR_DROPLET_ID_HERE")
droplet.reboot()

For more information on how to use the DigitalOcean API with Python check the following tutorial:

https://www.digitalocean.com/community/tutorials/how-to-use-web-apis-in-python-3

• BASH example

This would be quite similar to the plain curl command but the benefit is that we could add some variables, comments and etc.

#!/bin/bash

##
# Variables
##

API_TOKEN=YOUR_TOKEN_HERE
DROPLET_ID=YOUR_DROPLET_ID_HERE

curl -X POST -H "Content-Type: application/json" \
             -H "Authorization: Bearer ${API_TOKEN}" \
             -d '{"type":"reboot"}' \
             "https://api.digitalocean.com/v2/droplets/${DROPLET_ID}/actions"

If you have any other suggestions or examples, please feel free to share them here!

Regards,
Bobby