PHP curl_setopt：变量不能代替URL字符串

Question

我在php中使用CURL，并且我使用CURL这样的东西

      $url = "http://exampledomain.com";
      $smsURL = $url;

      $curl = curl_init();
      curl_setopt ($curl, CURLOPT_URL, $smsURL);
      curl_exec ($curl);
      curl_close ($curl);

这不起作用，但是如果我在curl_setopt（）处写了“ http://exampledomain.com ”来代替“ $ smsURL”； 它将正常工作。 我的代码在哪里出问题？ 我错过了什么？

原始码

          $url = $this->conf['sms_getway_url'];
      $url .= '&recipient=' . $_POST['txt_customer_contact_no'];
      $url .= '&sender=' . strtoupper($saloon_info['saloon_name']);
      $url .= '&is_payor=' . $this->conf['sms_is_payor'];
      $url .= '&pay_amount=' . $this->conf['sms_pay_amount'];
      $url .= '&token=5ce7467e9ec045cbbac448ba5a422a02';
      //$url .= '&customer_num=' . $this->conf['sms_customer_num'] . $saloon_id;
      $url .= '&customer_num=' . $this->conf['sms_customer_num'];
      $appointment_time = date('H:i', strtotime($app_start_time));
      $employee_name = $_POST['hdn_selected_employee_name']; //$value['id_employee'];
      //$sms_msg = "Hey. Recalling that I await tomorrow at. " . $appointment_time . " Regards " . $employee_name . ", " . $saloon_name . ". ";
      $sms_msg = t('msg_sms_book_appointment', array('%emp_name' => $employee_name, '%saloon_name' => $_POST['hdn_selected_saloon_name'], '%time' => $appointment_time));
      $url .= '&sms_msg=' . $sms_msg;

        $smsURL = $url;

        $curl = curl_init();
        curl_setopt ($curl, CURLOPT_URL, $smsURL);
        curl_exec ($curl);
        curl_close ($curl);

谢谢

Answer 1

您是从片段中组合URL，但没有正确编码值。 URL中有些字符具有特殊含义（ / ， ? ， & ， = ， % ， ， +等）。 当它们出现在查询字符串的值中时，必须对其进行编码，以保留其字面意义。

PHP通过函数urlencode()帮助您实现此目标，该函数可在创建查询字符串时用于分别编码每个值。 像这样：

$url  = $this->conf['sms_getway_url'];

$url .= '&recipient=' . urlencode($_POST['txt_customer_contact_no']);
$url .= '&sender=' . urlencode(strtoupper($saloon_info['saloon_name']));
...

但是，由于这是一项繁琐的工作，因此它也提供了一种更简单的方法。 使用变量的名称作为键，将所需的所有值放入数组，然后将数组传递给函数http_build_query() 。 无需再调用urlencode()了； http_build_query()会处理它。 还将“ & （ & ）放在变量之间，并在它们所属的位置等于（ = ）。

代码是这样的：

$url = $this->conf['sms_getway_url'];

// Prepare the values to put into the query string
$vars = array();
$vars['recipient']    = $_POST['txt_customer_contact_no'];
$vars['sender']       = strtoupper($saloon_info['saloon_name']);
$vars['is_payor']     = $this->conf['sms_is_payor'];
$vars['pay_amount']   = $this->conf['sms_pay_amount'];
$vars['token']        = '5ce7467e9ec045cbbac448ba5a422a02';
$vars['customer_num'] = $this->conf['sms_customer_num'];

$appointment_time = date('H:i', strtotime($app_start_time));
$employee_name    = $_POST['hdn_selected_employee_name'];
$sms_msg = t('msg_sms_book_appointment', array(
    '%emp_name'    => $employee_name,
    '%saloon_name' => $_POST['hdn_selected_saloon_name'],
    '%time'        => $appointment_time,
));
$vars['sms_msg']  = $sms_msg;


// Now, the magic comes into place
$smsURL = $url.'?'.http_build_query($vars);

$curl = curl_init();
curl_setopt ($curl, CURLOPT_URL, $smsURL);
if (! curl_exec ($curl)) {
    // Something went wrong. Check the status code (at least)
    $code = curl_getinfo($curl, CURLINFO_HTTP_CODE);
    // Do something here.
    // If $code >= 500 then the remote server encountered an internal error
    //                      retry later or ask them to fix it
    // If 400 <= $code < 500 then there is a problem with the request:
    //                            maybe the resource is not there (404, 410)  
    //                         or you are not allowed to access it (403)
    //                         or something else.
    echo('Failure sending the SMS. HTTP status code is '.$code."\n");
}
curl_close ($curl);

检查HTTP状态代码列表以获取更多详细信息。