How to Install "Repair order modul" in Swagger editor

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Here is the code, I can not connect it to Swagger database using PHP curl. any idea?

$user = urlencode("atsjD1ESjQAc1CgYssWf3n7Ulk5s4U06");
$pass = urlencode("MTGjsSVkT6R4dz1L");

$url1 = file_get_contents("https://".$user.":".$pass."@stage.apigw.cdkapps.eu/sample/sample/v1"); //replace "CLIENT-ID"
//."/repair-orders?licensePlate=".$licensePlate
$url = 'https://stage.apigw.cdkapps.eu/sample/sample/v1/repair-orders?licensePlate=$licensePlate';

$header = get_headers($url);
print_r($header);
$status_code = $header[0];
print "<br> status: ".$status_code;

$result = json_decode($url);
print_r( $result );