SF Integration Example

$url = 'https://login.salesforce.com/services/oauth2/token';
//$url = 'https://test.salesforce.com/services/oauth2/token';
$client_id = get_option('hnsf_client_id', true);
$client_secret = get_option('hnsf_client_secret', true);
$username = get_option('hnsf_username', true);
$password = get_option('hnsf_password', true);
$security_token = get_option('hnsf_security_token', true);

$params = "grant_type=password"
        . "&client_id=" . $client_id
        . "&client_secret=" . $client_secret
        . "&username=" . $username
        . "&password=". $password;  // Security token removed for production (per Kritika) // $password . $security_token

$curl = curl_init($url);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, $params);

$json_response = curl_exec($curl);
$response = json_decode($json_response, true);

if( ! isset( $response['error'] ) ) {
    update_option('hnsf_access_token', $response['access_token']);
    update_option('hnsf_instance_url', $response['instance_url']);
} else {
    die("Error: call to URL $url failed with status $status, response $json_response, curl_error " . curl_error($curl) . ", curl_errno " . curl_errno($curl));
}

return $response;