我在PHP中使用cUrl从一些外部服务请求。
有趣的是,服务器正在使用原始的“multipart / form-data”而不是二进制文件数据进行响应。
我的网站正在使用共享托管,因此PECL HTTP不是一种选择。
有没有办法用PHP解析这些数据?
示例代码:
$response = curl_exec($cUrl);
/* $response is raw "multipart/form-data" string
--MIMEBoundaryurn_uuid_DDF2A2C71485B8C94C135176149950475371
Content-Type: application/xop+xml; charset=utf-8; type="text/xml"
Content-Transfer-Encoding: binary
(xml data goes here)
--MIMEBoundaryurn_uuid_DDF2A2C71485B8C94C135176149950475371
Content-Type: application/zip
Content-Transfer-Encoding: binary
(binary file data goes here)
*/
编辑:我尝试将响应传递给localhost HTTP请求,但响应数据可能超过PHP进程中允许的内存大小。扩展内存限制不是很实用,这个操作也会大大降低服务器性能。
如果没有原始问题的替代方法,您可以根据PHP中的 streams 建议一种方法来处理非常大的POST请求以及XML解析。
我知道这很难,请评论。我愿意接受讨论。
答案 0 :(得分:4)
如果您需要来自响应的zip文件,我想您可以编写一个tmp文件来保存curl响应,并将其作为变通方法流式传输: 从未尝试使用多部分卷发,但我想它应该有用。
$fh = fopen('/tmp/foo', 'w');
$cUrl = curl_init('http://example.com/foo');
curl_setopt($cUrl, CURLOPT_FILE, $fh); // redirect output to filehandle
curl_exec($cUrl);
curl_close($cUrl);
fclose($fh); // close filehandle or the file will be corrupted
如果除了响应的xml部分之外不需要任何其他内容,则可能需要禁用标题
curl_setopt($cUrl, CURLOPT_HEADER, FALSE);
并添加选项以仅接受xml作为响应
curl_setopt($cUrl, CURLOPT_HTTPHEADER, array('Accept: application/xml'));
//That's a workaround since there is no available curl option to do so but http allows that
在黑暗中射击...... 你能用这些curlopt设置进行测试,看看修改这些设置是否有帮助吗
$headers = array (
'Content-Type: multipart/form-data; boundary=' . $boundary,
'Content-Length: ' . strlen($requestBody),
'X-EBAY-API-COMPATIBILITY-LEVEL: ' . $compatLevel, // API version
'X-EBAY-API-DEV-NAME: ' . $devID,
'X-EBAY-API-APP-NAME: ' . $appID,
'X-EBAY-API-CERT-NAME: ' . $certID,
'X-EBAY-API-CALL-NAME: ' . $verb,
'X-EBAY-API-SITEID: ' . $siteID,
);
$cUrl = curl_init();
curl_setopt($cUrl, CURLOPT_URL, $serverUrl);
curl_setopt($cUrl, CURLOPT_TIMEOUT, 30 );
curl_setopt($cUrl, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($cUrl, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($cUrl, CURLOPT_HTTPHEADER, $headers);
curl_setopt($cUrl, CURLOPT_POST, 1);
curl_setopt($cUrl, CURLOPT_POSTFIELDS, $requestBody);
curl_setopt($cUrl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($cUrl, CURLOPT_FAILONERROR, 0 );
curl_setopt($cUrl, CURLOPT_FOLLOWLOCATION, 1 );
curl_setopt($cUrl, CURLOPT_HEADER, 0 );
curl_setopt($cUrl, CURLOPT_USERAGENT, 'ebatns;xmlstyle;1.0' );
curl_setopt($cUrl, CURLOPT_HTTP_VERSION, 1 ); // HTTP version must be 1.0
$response = curl_exec($cUrl);
if ( !$response ) {
print "curl error " . curl_errno($cUrl ) . PHP_EOL;
}
curl_close($cUrl);
这只是一个尝试,如上所述,我无法让我的卷曲页面回应多部分表单数据。所以在这里和我一起温柔;)
$content_type = ""; //use last know content-type as a trigger
$tmp_cnt_file = "tmp/tmpfile";
$xml_response = ""; // this will hold the "usable" curl response
$hidx = 0; //header index.. counting the number of different headers received
function read_header($cUrl, $string)// this will be called once for every line of each header received
{
global $content_type, $hidx;
$length = strlen($string);
if (preg_match('/Content-Type:(.*)/', $string, $match))
{
$content_type = $match[1];
$hidx++;
}
/*
should set $content_type to 'application/xop+xml; charset=utf-8; type="text/xml"' for the first
and to 'application/zip' for the second response body
echo "Header: $string<br />\n";
*/
return $length;
}
function read_body($cUrl, $string)
{
global $content_header, $xml_response, $tmp_cnt_file, $hidx;
$length = strlen($string);
if(stripos ( $content_type , "xml") !== false)
$xml_response .= $string;
elseif(stripos ($content_type, "zip") !== false)
{
$handle = fopen($tmp_cnt_file."-".$hidx.".zip", "a");
fwrite($handle, $string);
fclose($handle);
}
/*
elseif {...} else{...}
depending on your needs
echo "Received $length bytes<br />\n";
*/
return $length;
}
当然设置了正确的curlopts
// Set callback function for header
curl_setopt($cUrl, CURLOPT_HEADERFUNCTION, 'read_header');
// Set callback function for body
curl_setopt($cUrl, CURLOPT_WRITEFUNCTION, 'read_body');
不要因为内存问题而忘记不将curl响应保存到变量中, 希望你所需要的只是上面的$ xml_response。
//$response = curl_exec($cUrl);
curl_exec($cUrl);
对于解析代码,您可以参考$xml_response
以及在此方案中以tmp/tmpfile-2
开头创建的临时文件。同样,我无法以任何方式测试上面的代码。所以这可能不起作用(但它应该是imho;))
假设我们希望curl将所有传入数据直接写入另一个(传出)流,在这种情况下是套接字连接
我不确定它是否像这样容易:
$fs = fsockopen($host, $port, $errno, $errstr);
$cUrl = curl_init('http://example.com/foo');
curl_setopt($cUrl, CURLOPT_FILE, $fs); // redirect output to sockethandle
curl_exec($cUrl);
curl_close($cUrl);
fclose($fs); // close handle
否则我们必须使用我们已知的写入和头部函数,只需要一点技巧
//first open the socket (before initiating curl)
$fs = fsockopen($host, $port, $errno, $errstr);
// now for the new callback function
function socket_pipe($cUrl, $string)
{
global $fs;
$length = strlen($string);
fputs($fs, $string); // add NOTHING to the received line just send it to $fs; that was easy wasn't it?
return $length;
}
// and of course for the CURLOPT part
// Set callback function for header
curl_setopt($cUrl, CURLOPT_HEADERFUNCTION, 'socket_pipe');
// Set the same callback function for body
curl_setopt($cUrl, CURLOPT_WRITEFUNCTION, 'socket_pipe');
// do not forget to
fclose($fs); //when we're done
问题是,不编辑结果并简单地将其传递给$fs
将使得apache正在侦听某个端口,然后您将脚本分配给该端口。
或者您需要在fsockopen
fputs($fp, "POST $path HTTP/1.0\n"); //where path is your script of course
答案 1 :(得分:0)
我很抱歉我帮不了多,因为你没有多少代码,但我记得当我玩curl_setopt选项时我遇到了类似的问题。
您使用 CURLOPT_BINARYTRANSFER 吗?
来自php文档 - &gt;的 CURLOPT_BINARYTRANSFER 强> - &GT;当使用CURLOPT_RETURNTRANSFER时返回原始输出,则为TRUE。
答案 2 :(得分:0)
只需设置CURLOPT_RETURNTRANSFER CURLOPT_POST
即可 $c = curl_init($url);
curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
curl_setopt($c, CURLOPT_CONNECTTIMEOUT, 1);
curl_setopt($c, CURLOPT_TIMEOUT, 1);
curl_setopt($c, CURLOPT_POST, 1);
curl_setopt($c, CURLOPT_POSTFIELDS,
array());
$rst_str = curl_exec($c);
curl_close($c);
答案 3 :(得分:0)
你可以重新组装二进制数据做这样的事情,我希望它有所帮助。
$file_array = explode("\n\r", $file, 2);
$header_array = explode("\n", $file_array[0]);
foreach($header_array as $header_value) {
$header_pieces = explode(':', $header_value);
if(count($header_pieces) == 2) {
$headers[$header_pieces[0]] = trim($header_pieces[1]);
}
}
header('Content-type: ' . $headers['Content-Type']);
header('Content-Disposition: ' . $headers['Content-Disposition']);
echo substr($file_array[1], 1);
答案 4 :(得分:0)
如果您不需要二进制数据,请在下面尝试过吗?
curl_setopt($c, CURLOPT_NOBODY, true);