OAuth 2.0

curl -u testclient:testsecret https://oauth.seven.io/token \
  -d 'grant_type=authorization_code&code=9ccb478a7cbe043c1df211f1d52a6437f8756cf8'

{
  "access_token":"b1a9391d0469cafe30258893ab6025d4ad94ecec",
  "expires_in":3600,
  "token_type":"Bearer",
  "scope":"sms",
  "refresh_token":"ffd8e622aa5dccc2905f2ac6a0999c785a803157"
}

curl -u testclient:testsecret https://oauth.seven.io/token \
  -d 'grant_type=refresh_token&refresh_token=ffd8e622aa5dccc2905f2ac6a0999c785a803157'

{
  "access_token":"worw5xlrl0sjwqkvmstibwn4pw0mdvpddljzkfi8",
  "expires_in":3600,
  "token_type":"Bearer",
  "scope":"sms",
  "refresh_token":"n94c2kyej8ycsjutmviuk8i6zebgsda0uzg2gbpn"
}

curl https://gateway.seven.io/api/sms -H 'Authorization: Bearer ACCESS_TOKEN'

curl https://oauth.seven.io/me -H 'Authorization: Bearer ACCESS_TOKEN'

{
    "success": true,
    "user_id": 12345,
    "email": "john.doe@acme.inc",
    "company": "Acme Inc.",
    "alias": "acme_inc",
    "balance": "627.3615"
}

<?php

// Application credentials
$client_id = 'testclient';
$client_secret = 'testsecret';

session_start();

// Request authorization for sms, analytics and lookup endpoints. // Leave empty to allow all scopes
$requested_scopes = [
  'sms',
  'analytics',
  'lookup'
];

// Generate random string for state
$state = bin2hex(openssl_random_pseudo_bytes(10));

// Store state in session
$_SESSION['state'] = $state;

// Build authorization URI
$auth_uri = 'https://oauth.seven.io/authorize?' .
  http_build_query([
    'response_type' => 'code',
    'client_id' => $client_id,
    'state' => $state,
    'scope' => implode(' ', $requested_scopes),
  ]);

// Redirect User to OAuth authorization site
header('Location: ' . $auth_uri);

<?php

// Application credentials $client_id = 'testclient'; 
$client_secret = 'testsecret'; 

session_start(); 

// CSRF check failed
if($_GET['state'] != $_SESSION['state']) {
  die('CSRF check failed');
}

// An error occured during authorization
elseif(isset($_GET['error'])) {
  die('Error: ' . $_GET['error']);
}

// We got a code, send it to OAuth 2.0 API to get the tokens...
elseif(isset($_GET['code'])) {
  $post_vars = http_build_query([
    'grant_type' => 'authorization_code',
    'code' => $_GET['code'],
  ]);

  $ch = curl_init();
  curl_setopt($ch, CURLOPT_USERPWD, $client_id . ":" . $client_secret);

  curl_setopt($ch, CURLOPT_URL, 'https://oauth.seven.io/token');
  curl_setopt($ch, CURLOPT_POST, 1);
  curl_setopt($ch, CURLOPT_POSTFIELDS, $post_vars);
  curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

  $response = curl_exec($ch);

  curl_close ($ch);

  $token = json_decode($response);

  // You should store the tokens here in order to make API calls
  die("Access Token: " . $token->access_token);
}