mapping automatically Box.com and Php - php

Question

I am trying to design an Application which can create folder and retrieve that folder from box.com using PHP, I have tried lots of APIs but fail.
Also I want to create the folder with automatic authentication.
I have tried https://developers.box.com/docs/ but can't do automatic authentication.
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://api.box.com/oauth2/token");
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_ENCODING,"Content-Type:application/x-www-form-urlencoded");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER,true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST,"POST");
curl_setopt($ch, CURLOPT_HTTPHEADER, array("Content-Type: application/x-www-form-urlencoded", 'Accept: application/json'));
curl_setopt($ch, CURLOPT_POSTFIELDS,array('client_id=MY_CLIENT_ID&client_secret=MY_CLIENT_SECRET_KEY&grant_type=urn:box:oauth2:grant-type:provision&username=MY_EMAIL'));
$result = curl_exec($ch);
curl_close($ch);
print_r($result);
here i use my client id, secret key and my email id which are register in box.com
IT Gives Some Kind of error:
{"error":"invalid_client","error_description":"The client credentials
are invalid"}

Answer 1

I would recommend using this BoxPHPAPI. I have used it on a big enterprise app. You have to make sure first that you have a app created at developers.box.com.
Once that is done you can pass all that info to the BoxPHPAPI Class and it should handle your login and authentication.
If you plan on doing many API calls at once or rapid succession I recommended you use curl pooling. It speeds it up quite a bit. From about 4 seconds to under 1 (for 5+ API calls). You can see an example of the pooling in this fork of the BoxPHPAPI.
I hope this helps!