(PHP ActiveX) Get a Xero OAuth2 Access Token

Gets a Xero OAuth2 access token.

Note: This example requires Chilkat v10.1.2 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows Note: The php_com_dotnet.dll may need to be enabled inside of php.ini.

<?php

// For more information about the OAuth2, see OAuth 2.0 Authorization Flow

// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.OAuth2')
$oauth2 = new COM("Chilkat.OAuth2");

// For Xero OAuth2, set the listen port equal to the port used
// in the Authorized Redirect URL for the Client ID.
// For example, in this case the Authorized Redirect URL would be http://localhost:55568/
// Your app should choose a port not likely not used by any other application.
// See Xero OAuth2 for Desktop Apps for more information.
$oauth2->ListenPort = 55568;

$oauth2->AuthorizationEndpoint = 'https://login.xero.com/identity/connect/authorize';
$oauth2->TokenEndpoint = 'https://identity.xero.com/connect/token';

// Replace these with actual values.
$oauth2->ClientId = 'XERO_APP_OAUTH2_CLIENT_ID';
$oauth2->ClientSecret = 'XERO_APP_OAUTH2_CLIENT_SECRET';
$oauth2->UseBasicAuth = 1;

// See https://developer.xero.com/documentation/oauth2/scopes for a complete list of scopes.
// You will need to change the scopes depending on what access is needed..
$oauth2->Scope = 'openid profile email accounting.transactions accounting.attachments accounting.settings payroll.employees offline_access';

// Begin the OAuth2 Authorization code flow.  This returns a URL that should be loaded in a browser.
$url = $oauth2->startAuth();
if ($oauth2->LastMethodSuccess != 1) {
    print $oauth2->LastErrorText . "\n";
    exit;
}

print 'url = ' . $url . "\n";

// Launch the default browser on the system and navigate to the url.
// The LaunchBrowser method was added in Chilkat v10.1.2.
$success = $oauth2->LaunchBrowser($url);
if ($success == 0) {
    print $oauth2->LastErrorText . "\n";
    exit;
}

// Wait for the user to approve or deny authorization in the browser.
$numMsWaited = 0;
while (($numMsWaited < 90000) and ($oauth2->AuthFlowState < 3)) {
    $oauth2->SleepMs(100);
    $numMsWaited = $numMsWaited + 100;
}

// If the browser does not respond within the specified time, AuthFlowState will be:
// 
// 1: Waiting for Redirect - The OAuth2 background thread is waiting for the browser's redirect request.
// 2: Waiting for Final Response - The thread is awaiting the final access token response.
// In either case, cancel the background task initiated by StartAuth.

if ($oauth2->AuthFlowState < 3) {
    $oauth2->Cancel();
    print 'No response from the browser!' . "\n";
    exit;
}

// Check AuthFlowState to determine if authorization was granted, denied, or failed:
// 
// 3: Success - OAuth2 flow completed, the background thread exited, and the successful response is in AccessTokenResponse.
// 4: Access Denied - OAuth2 flow completed, the background thread exited, and the error response is in AccessTokenResponse.
// 5: Failure - OAuth2 flow failed before completion, the background thread exited, and error details are in FailureInfo.

if ($oauth2->AuthFlowState == 5) {
    print 'OAuth2 failed to complete.' . "\n";
    print $oauth2->FailureInfo . "\n";
    exit;
}

if ($oauth2->AuthFlowState == 4) {
    print 'OAuth2 authorization was denied.' . "\n";
    print $oauth2->AccessTokenResponse . "\n";
    exit;
}

if ($oauth2->AuthFlowState != 3) {
    print 'Unexpected AuthFlowState:' . $oauth2->AuthFlowState . "\n";
    exit;
}

// Save the full JSON access token response to a file.
// For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.StringBuilder')
$sbJson = new COM("Chilkat.StringBuilder");
$sbJson->Append($oauth2->AccessTokenResponse);
$sbJson->WriteFile('qa_data/tokens/xero-access-token.json','utf-8',0);

// The saved JSON response looks like this:

// 	{
// 	 "access_token": "...",
// 	 "token_type": "Bearer",
// 	 "expires_in": 3600,
// 	 "refresh_token": "..."
// 	}
// 
print 'OAuth2 authorization granted!' . "\n";
print 'Access Token = ' . $oauth2->AccessToken . "\n";

?>