curl in php (How to set the authorization header using curl)

$service_url = 'https://example.com/something/something.json';

$curl = curl_init($service_url);

curl_setopt($curl, CURLOPT_HTTPAUTH, CURLAUTH_BASIC);

curl_setopt($curl, CURLOPT_USERPWD, "username:password"); //Your credentials goes here

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);

 //IMP if the url has https and you don't want to verify source certificate

$curl_response = curl_exec($curl);

$response = json_decode($curl_response);

curl_close($curl);

var_dump($response);