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(PHP ActiveX) PayPal -- Get an OAuth 2.0 Access Token

Demonstrates how to send a request to get a PayPal OAuth2 access token. Sends an HTTP request equivalent to the following:

curl https://api.sandbox.paypal.com/v1/oauth2/token \
  -H "Accept: application/json" \
  -H "Accept-Language: en_US" \
  -u "Client-Id:Secret" \
  -d "grant_type=client_credentials"

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

//  Note: Requires Chilkat v9.5.0.64 or greater.

//  This requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

$rest = new COM("Chilkat_9_5_0.Rest");

//  Make the initial connection.
//  A single REST object, once connected, can be used for many PayPal REST API calls.
//  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
//  then it will be automatically re-established as needed.
$bAutoReconnect = 1;
$success = $rest->Connect('api.sandbox.paypal.com',443,1,$bAutoReconnect);
if ($success != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

//  Duplicate this request:

//  	curl https://api.sandbox.paypal.com/v1/oauth2/token \
//  	  -H "Accept: application/json" \
//  	  -H "Accept-Language: en_US" \
//  	  -u "Client-Id:Secret" \
//  	  -d "grant_type=client_credentials"

$rest->AddHeader('Accept','application/json');
$rest->AddHeader('Accept-Language','en_US');

//  For additional help on where to find  your client ID and API secret, see PayPal Client_ID and API_Secret
$rest->SetAuthBasic('PAYPAL_REST_API_CLIENT_ID','PAYPAL_REST_API_SECRET');

$rest->AddQueryParam('grant_type','client_credentials');

$responseStr = $rest->fullRequestFormUrlEncoded('POST','/v1/oauth2/token');
if ($rest->LastMethodSuccess != 1) {
    print $rest->LastErrorText . "\n";
    exit;
}

print $rest->LastRequestHeader . "\n";

//  A sample response:

//  	{
//  	  "scope": "https://api.paypal.com/v1/payments/.* https://api.paypal.com/v1/vault/credit-card https://api.paypal.com/v1/vault/credit-card/.*",
//  	  "access_token": "EEwJ6tF9x5WCIZDYzyZGaz6Khbw7raYRIBV_WxVvgmsG",
//  	  "token_type": "Bearer",
//  	  "app_id": "APP-6XR95014BA15863X",
//  	  "expires_in": 28800
//  	}

$json = new COM("Chilkat_9_5_0.JsonObject");
$json->Load($responseStr);
$json->EmitCompact = 0;

//  Check the response status code.  A 200 indicates success..
if ($rest->ResponseStatusCode != 200) {
    print $json->emit() . "\n";
    print 'Failed.' . "\n";
    exit;
}

//  Given that the access token expires in approx 8 hours,
//  let's record the date/time this token was created.
//  This will allow us to know beforehand if the token
//  is expired (and we can then fetch a new token).
$dateTime = new COM("Chilkat_9_5_0.CkDateTime");
$bLocalTime = 0;
$dtNow = $dateTime->GetAsUnixTime($bLocalTime);
$json->AppendInt('tokenCreateTimeUtc',$dtNow);

//  Examine the access token and save to a file.
print 'Access Token: ' . $json->stringOf('access_token') . "\n";
print 'Full JSON Response:' . "\n";
print $json->emit() . "\n";

$sbResponse = new COM("Chilkat_9_5_0.StringBuilder");
$sbResponse->Append($json->emit());
$bEmitBom = 0;
$sbResponse->WriteFile('qa_data/tokens/paypal.json','utf-8',$bEmitBom);

?>

 

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