我可以多次使用CURLOPT_HTTPHEADER调用curl_setopt来设置多个标头吗？

Question

我可以多次拨打curl_setopt CURLOPT_HTTPHEADER来设置多个标头吗？

$url = 'http://www.example.com/';

$curlHandle = curl_init($url);
curl_setopt($curlHandle, CURLOPT_HTTPHEADER, array('Content-type: application/xml'));
curl_setopt($curlHandle, CURLOPT_HTTPHEADER, array('Authorization: gfhjui'));

$execResult = curl_exec($curlHandle);

Answer 1

请求内部针对请求执行curl（通过this answer to "Php - Debugging Curl"中列出的方法）回答问题：否，无法使用curl_setopt调用CURLOPT_HTTPHEADER。第二个呼叫将覆盖第一个呼叫的标头。

相反，需要使用所有标题调用该函数一次：

$headers = array(
    'Content-type: application/xml',
    'Authorization: gfhjui',
);
curl_setopt($curlHandle, CURLOPT_HTTPHEADER, $headers);

相关（但不同）的问题是：

• How to send a header using a HTTP request through a curl call?（在命令行上卷曲）
• How to get an option previously set with curl_setopt()?（curl PHP扩展名）

Answer 2

其他类型的格式：

$headers[] = 'Accept: application/json';
$headers[] = 'Content-Type: application/json';
$headers[] = 'Content-length: 0';

curl_setopt($curlHandle, CURLOPT_HTTPHEADER, $headers);

Answer 3

/**
 * If $header is an array of headers
 * It will format and return the correct $header
 * $header = [
 *  'Accept' => 'application/json',
 *  'Content-Type' => 'application/x-www-form-urlencoded'
 * ];
 */
$i_header = $header;
if(is_array($i_header) === true){
    $header = [];
    foreach ($i_header as $param => $value) {
        $header[] = "$param: $value";
    }
}