This function fires a curl request with get or post method

curl_download.php

/*
 * This function fires a curl request with get or post method
 * $method contains 'get' or 'post'
 * $query_string contains $query_string = "?x=10&y=20";
 */
curl_download($Url, $query_string, $method);

function curl_download($Url, $query_string, $method) {

    if ($method == 'get') {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $Url . $query_string);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "GET");
        $response = trim(curl_exec($ch));
        $err = curl_error($curl);
        curl_close($ch);
        if ($err) {
            $result = $err;
        } else {
            $result = $response;
        }
        return $result;
    } elseif ($method == 'post') {
        curl_setopt($ch, CURLOPT_URL, $Url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $query_string);
        $response = trim(curl_exec($ch));
        $err = curl_error($curl);
        curl_close($ch);
        if ($err) {
            $result = $err;
        } else {
            $result = $response;
        }
        return $result;
    }
}