// Generated by curl-to-PHP: http://incarnate.github.io/curl-to-php/ 
$ch = curl_init(); 
curl_setopt($ch, CURLOPT_URL, 'https://api.iyspanel.com/dev/oauth/token'); 
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt($ch, CURLOPT_POST, 1); 
curl_setopt($ch, CURLOPT_POSTFIELDS, "grant_type=client_credentials&client_id=<CLIENT_ID>&client_secret=<CLIENT_SECRET>"); 

$headers = array(); 
$headers[] = 'Content-Type: application/x-www-form-urlencoded'; 
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); 

$result = curl_exec($ch); 
if (curl_errno($ch)) {    
echo 'Error:' . curl_error($ch); 
} 
curl_close($ch);