SMS API无法在我的Hostinger服务器上运行，但可以与localhost一起正常使用

如何解决SMS API无法在我的Hostinger服务器上运行，但可以与localhost一起正常使用

具有以下用于发送短信的代码的AM在localhost上正常运行，没有任何问题，但在错误下方显示的服务器却没有

cURL错误：28个连接在30001毫秒后超时

define("SMS_URL_TEXT","http://sms.stayintouch.co.in/api/sendhttp.PHP");

function SendSMS($recipients,$sms_message)
{
    
    $url = SMS_URL_TEXT;    
    $param = array(
        'authkey' => SMS_AUTH_KEY,'mobiles' => implode(',',$recipients),'sender' => SMS_SENDER,'message' => $sms_message,'route' => '4','country' => '0'
        );
    
    
    
    $result="1";
    $post = '';
    foreach ($param as $key => $val) 
    {
        $post .= '&' . $key . '=' . rawurlencode($val);
    }
    

    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
    curl_setopt($ch,CURLOPT_TIMEOUT,30);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$post);
    curl_setopt($ch,CURLOPT_HTTPHEADER,array("Connection: close"));
    $result = curl_exec($ch);
    if(curl_errno($ch)) 
    {
        $result = "cURL ERROR: " . curl_errno($ch) . " " . curl_error($ch);
    } 
    else 
    {
        $returnCode = (int)curl_getinfo($ch,CURLINFO_HTTP_CODE);
        switch($returnCode) 
        {
        case 200 :
        break;
        default :
        $result = "HTTP ERROR: " . $returnCode;
        }
    }
    curl_close($ch);
    return $result;
}

SendSMS($recipients=array("919327133788"),$sms_message="test message developer");