Converter código JAVA para PHP

Bom dia gostaria de Converter este código JAVA para PHP

public class TestSampleClient
{
public static void main(String[] args) throws IOException
{

URL urlCon = new URL("https://api.lomadee.com/services/report/transactions/<PUBLISHER_ID>/?startDate=04052012&endDate=05052012&eventStatus=0");
 HttpURLConnection con = (HttpURLConnection) urlCon.openConnection();
 con.setRequestProperty("Request-Method", "GET");
 con.setRequestProperty("Accept", "application/xml");
 con.setRequestProperty("Authorization", "Basic "+ new String(Base64.encode(("<USER>" + ":" + "<PASSWORD>").getBytes())));
 con.connect();
 BufferedReader reader = new BufferedReader(new InputStreamReader(con.getInputStream()));
 String line = "";
 while ((line = reader.readLine()) != null)
 {
 System.out.println(line);
 }
}
}

Estou tentando desta forma

$api = "https://api.lomadee.com/services/report/transactions/".$id_publicher."/?startDate=30092013&endDate=31132013&eventStatus=0";

$curl = curl_init();
curl_setopt($curl , CURLOPT_URL , $api );
curl_setopt($curl , CURLOPT_SSL_VERIFYPEER , false );
curl_setopt($curl , CURLOPT_HTTPAUTH, CURLAUTH_BASIC);
curl_setopt($curl , CURLOPT_USERPWD, $user.":".$senha);
curl_setopt($curl , CURLOPT_USERAGENT , isset( $_SERVER[ 'HTTP_USER_AGENT' ] ) ? $_SERVER[ 'HTTP_USER_AGENT' ] : "Mozilla/4.0" );
curl_setopt($curl , CURLOPT_RETURNTRANSFER , true );
$retorno = curl_exec( $curl );
echo $retorno;
curl_close($curl);

Obrigado Att. Brambilla