Paypal API with PHP and cURL

Question

I'm attempting "the first call" as outlined by the Paypal API documentation. This is the example provided that I'm following:

curl https://api.sandbox.paypal.com/v1/oauth2/token \  -H "Accept: application/json" \  -H "Accept-Language: en_US" \  -u "EOJ2S-Z6OoN_le_KS1d75wsZ6y0SFdVsY9183IvxFyZp:EClusMEUk8e9ihI7ZdVLF5cZ6y0SFdVsY9183IvxFyZp" \  -d "grant_type=client_credentials" 

I have constructed a curl instance in PHP with all the above headers apart from the last one. What does a -d flag convert to as a curl option in PHP? There is little explanation there as far as I can tell. I managed to deduce -u as CURLOPT_USERPWD.

Answer 1

Having a good trawl around I pieced together parts from developers with other problems. I successfully gained my access token using the following code:

<?php  $ch = curl_init(); $clientId = "myId"; $secret = "mySecret";  curl_setopt($ch, CURLOPT_URL, "https://api.sandbox.paypal.com/v1/oauth2/token"); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);  curl_setopt($ch, CURLOPT_USERPWD, $clientId.":".$secret); curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials");  $result = curl_exec($ch);  if(empty($result))die("Error: No response."); else {     $json = json_decode($result);     print_r($json->access_token); }  curl_close($ch);  ?>