卷曲错误：无法连接到主机

Question

我正在使用localhost.So，在这里我收到像curl错误的错误：无法连接到主机。任何人都可以帮忙？提前致谢

$postp="http://mainadmin.dove-sms.com/sendsms.jsp?user=username&password=password&mobiles=$mobilenumbers&sms=$message&unicode=1";
$ch = curl_init($postp);

$ret = array(CURLOPT_SSL_VERIFYHOST => 1,
        CURLOPT_SSL_VERIFYPEER => false,
        CURLOPT_FOLLOWLOCATION => 1,
        CURLOPT_VERBOSE => true,
        CURLOPT_RETURNTRANSFER => 1);
$ret1 = curl_setopt_array($ch, $ret);

$curlresponse = curl_exec($ch); 

if(curl_errno($ch))

echo 'curl error : '. curl_error($ch);