Zoho CRM API using by PHP

Thank you for the great products as Zoho CRM.

I have a question about Zoho CRM API

I have received the sample code of using API in terms of PHP.

/*sample code*/

header("Content-type: application/xml");

$token="MYTOKEN";

$param= "authtoken=".$token."&scope=crmapi";

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_TIMEOUT, 30);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, $param);

$result = curl_exec($ch);

curl_close($ch);

echo $result;

curl_close($ch);

/*sample code*/

I could not receive the XML data on the web site however after I used the this url as " https://crm.zoho.com/crm/private/xml/Leads/getRecords?authtoken=MYTOKEN&scope=crmap" , I have received xml data.

Please let me know the problem of the sample code.

Junya