在PHP中使用webservice返回XML

Question

I am using a webservice to get some results in XMl form... here is the part of the code

public function getXML()
{
    $url=$this->constructURL();
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    $xml = curl_exec($ch);
    if ($error = curl_error($ch)) {
    echo "Error: $error<br />
";
    }
    curl_close($ch);
    return $xml;
}


$resultXML = $api->getXML();
echo $resultXML;

when i echo that '$asd' it does nothing but a balnk page...

but when i use the value of $url directly in the browser it produce an XML result...

can any one suggest me where i am going wrong???

ADDED.........

when i included the error reporting after curl_exec

it gives an error

Error: SSL certificate problem, verify that the CA cert is OK. Details: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed

also Iam usig https://blahblh for request

Answer 1

Solved Out The PROBLEM....

since i am using https:// ,i Have to include a single line of code which set the cURL options

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);