curl request php

curl.php

<?php 

$ch = curl_init('https://pal-test.adyen.com/pal/servlet/Payment/v25/refund');
# Setup request to send json via POST.
$payload = '{
  "merchantAccount": "ZaloraTW",
  "modificationAmount": {
    "currency": "TWD",
    "value": 8739100.00	
  },
  "originalReference": "8524990628777503",
  "reference": "200171463"
}';
$username = "[email protected]";
$password = "38Ye\c&XfY~-I&pGf?RvYTMiT";
curl_setopt($ch, CURLOPT_USERPWD, $username . ":" . $password);  
curl_setopt( $ch, CURLOPT_POSTFIELDS, $payload );
curl_setopt( $ch, CURLOPT_HTTPHEADER, array('Content-Type:application/json'));
# Return response instead of printing.
curl_setopt( $ch, CURLOPT_RETURNTRANSFER, true );
# Send request.
$result = curl_exec($ch);
curl_close($ch);
# Print response.
echo "<pre>$result</pre>";

?>