更好的方法是使用详细的CURL响应，可以通过管道连接到临时流。然后可以在响应中搜索报头名称。这可能需要一些调整，但对我来说很管用:

class genericCURL {
    /**
     * NB this is designed for getting data, or for posting JSON data
     */
    public function request($url, $method = 'GET', $data = array()) {
        $ch = curl_init();
        
        if($method == 'POST') {
            
            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "POST");
            curl_setopt($ch, CURLOPT_POSTFIELDS, $string = json_encode($data));
            
        }

        
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_VERBOSE, true);
        
        //open a temporary stream to output the curl log, which would normally got to STDERR
        $err = fopen("php://temp", "w+");
        curl_setopt($ch, CURLOPT_STDERR, $err);
        

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        $server_output = curl_exec ($ch);
        
        //rewind the temp stream and put it into a string   
        rewind($err);
        $this->curl_log = stream_get_contents($err);
        
        curl_close($ch);
        fclose($err);

    
        return $server_output;
        
    }
    
    /**
     * use the curl log to get a header value
     */
    public function getReturnHeaderValue($header) {
        $log = explode("\n", str_replace("\r\n", "\n", $this->curl_log));
        foreach($log as $line) {
            //is the requested header there
            if(stripos($line, '< ' . $header . ':') !== false) {
                $value = trim(substr($line, strlen($header) + 3));
                return $value;
            }
        }
        //still here implies not found so return false
        return false;
        
    }
}

PHP文档注释中发布了一个解决方案:http://www.php.net/manual/en/function.curl-exec.php#80442

代码示例:

$ch = curl_init();
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);
// ...

$response = curl_exec($ch);

// Then, after your curl_exec call:
$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$header = substr($response, 0, $header_size);
$body = substr($response, $header_size);

警告:正如下面的评论所指出的，当与代理服务器一起使用或在处理某些类型的重定向时，这可能不可靠。@Geoffrey的回答可能会更可靠地处理这些问题。

这就是你想要的吗?

curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));
$response = curl_exec($ch); 
list($header, $body) = explode("\r\n\r\n", $response, 2);

如果你正在使用GET，试试这个:

$curl = curl_init($url);

curl_setopt_array($curl, array(
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_ENCODING => "",
    CURLOPT_MAXREDIRS => 10,
    CURLOPT_TIMEOUT => 30,
    CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
    CURLOPT_CUSTOMREQUEST => "GET",
    CURLOPT_HTTPHEADER => array(
        "Cache-Control: no-cache"
    ),
));

$response = curl_exec($curl);
curl_close($curl);

这里的许多答案的问题是“\r\n\r\n”可以合法地出现在html的主体中，因此您不能确保正确地分割了头文件。

在调用curl_exec时单独存储标头的唯一方法似乎是使用回调，就像上面https://stackoverflow.com/a/25118032/3326494中建议的那样

然后，为了(可靠地)获得请求的主体，您需要将Content-Length报头的值作为负起始值传递给substr()。

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);

$parts = explode("\r\n\r\nHTTP/", $response);
$parts = (count($parts) > 1 ? 'HTTP/' : '').array_pop($parts);
list($headers, $body) = explode("\r\n\r\n", $parts, 2);

适用于HTTP/1.1 100在其他报头之前继续。

如果你需要使用错误服务器，只发送LF而不是CRLF作为换行符，你可以使用preg_split，如下所示:

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_HEADER, 1);

$parts = preg_split("@\r?\n\r?\nHTTP/@u", $response);
$parts = (count($parts) > 1 ? 'HTTP/' : '').array_pop($parts);
list($headers, $body) = preg_split("@\r?\n\r?\n@u", $parts, 2);