Mail send in Mailgun by using CURL

send_mail($emailadderss,$subject1,$message1);



function send_mail($email,$subject,$msg) {
  $api_key="";
 $domain ="test.com";

 /*
 $ch = curl_init();
 curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
 curl_setopt($ch, CURLOPT_USERPWD, 'api:'.$api_key);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
 curl_setopt($ch, CURLOPT_URL, 'https://api.mailgun.net/v2/'.$domain.'/messages');
 curl_setopt($ch, CURLOPT_POSTFIELDS, array(
  'from' => 'test <test@test.com>',
  'to' => $email,
  'subject' => $subject,
  'html' => $msg
 ));
 $result = curl_exec($ch);
 curl_close($ch);
 print_r($result);

 */

 $curl_post_data=array(
'from' => 'test <test@test.com>',
    'to' => $email,
    'subject' => $subject,
    'html' => $msg

);

$service_url = 'https://api.mailgun.net/v3/test.com/messages';
$curl = curl_init($service_url);
curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl, CURLOPT_USERPWD, "api:key-0d12528adb56a2591d84f936e3c9a280");

curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true);

curl_setopt($curl, CURLOPT_POSTFIELDS, $curl_post_data);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);


$curl_response = curl_exec($curl); 
$response = json_decode($curl_response);
curl_close($curl);

var_dump($response);

}