(PHP Extension) LinkedIn OAuth2 Access Token

See more OAuth2 Examples

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

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<?php

include("chilkat.php");
// Use "chilkat_9_5_0.php" for versions of Chilkat < 10.0.0

// To further clarify, see OAuth 2.0 Authorization Flow

$oauth2 = new CkOAuth2();

// The port should match the Authorized Redirect URL in your LinkedIn app, 
// which would look like "http://localhost:3017/"
// See a screenshot below...
$oauth2->put_ListenPort(3017);

$oauth2->put_AuthorizationEndpoint('https://www.linkedin.com/oauth/v2/authorization');
$oauth2->put_TokenEndpoint('https://www.linkedin.com/oauth/v2/accessToken');

// Replace these with actual values.
$oauth2->put_ClientId('CLIENT_ID');
$oauth2->put_ClientSecret('CLIENT_SECRET');
$oauth2->put_Scope('w_member_social');

// Begin the OAuth2 three-legged flow.  This returns a URL that should be loaded in a browser.
$url = $oauth2->startAuth();
if ($oauth2->get_LastMethodSuccess() != true) {
    print $oauth2->lastErrorText() . "\n";
    exit;
}

// 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 == false) {
    print $oauth2->lastErrorText() . "\n";
    exit;
}

// Wait for the interactive user to grant permission in the interactive browser session.
// We'll wait for a max of 90 seconds.
$numMsWaited = 0;
while (($numMsWaited < 90000) and ($oauth2->get_AuthFlowState() < 3)) {
    $oauth2->SleepMs(100);
    $numMsWaited = $numMsWaited + 100;
}

// If there was no response from the browser within 90 seconds, then 
// the AuthFlowState will be equal to 1 or 2.
// 1: Waiting for Redirect. The OAuth2 background thread is waiting to receive the redirect HTTP request from the browser.
// 2: Waiting for Final Response. The OAuth2 background thread is waiting for the final access token response.
// In that case, cancel the background task started in the call to StartAuth.
if ($oauth2->get_AuthFlowState() < 3) {
    $oauth2->Cancel();
    print 'No response from the browser!' . "\n";
    exit;
}

// Check the AuthFlowState to see if authorization was granted, denied, or if some error occurred
// The possible AuthFlowState values are:
// 3: Completed with Success. The OAuth2 flow has completed, the background thread exited, and the successful JSON response is available in AccessTokenResponse property.
// 4: Completed with Access Denied. The OAuth2 flow has completed, the background thread exited, and the error JSON is available in AccessTokenResponse property.
// 5: Failed Prior to Completion. The OAuth2 flow failed to complete, the background thread exited, and the error information is available in the FailureInfo property.
if ($oauth2->get_AuthFlowState() == 5) {
    print 'OAuth2 failed to complete.' . "\n";
    print $oauth2->failureInfo() . "\n";
    exit;
}

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

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

print 'OAuth2 authorization granted!' . "\n";
print 'Access Token = ' . $oauth2->accessToken() . "\n";

print 'Full JSON Response = ' . $oauth2->accessTokenResponse() . "\n";

// Example JSON Response:
// 
// {
//   "access_token": "AQU7C5zU8n....ggWyUA",
//   "expires_in": 5183999,
//   "scope": "w_member_social"
// }

// Save the full JSON access token response to a file.
$sbJson = new CkStringBuilder();
$sbJson->Append($oauth2->accessTokenResponse());
$sbJson->WriteFile('qa_data/tokens/_linkedIn.json','utf-8',false);

// Here is an example showing how to define your App in the LinkedIn developers console:
// 

?>