Попробуйте это:
//CHANGE THIS
$username='YOUR_USERNAME';
$password='YOUR_PASSWORD';
$location='http://YOUR_ADDRESS/YOUR_FILE.php';
$ch = curl_init ();
curl_setopt($ch,CURLOPT_URL,$location);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_USERPWD,"$username:$password");
curl_setopt($ch, CURLOPT_TIMEOUT, 10);
$result = curl_exec ($ch);