PHP - 调试卷曲
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PHP - Debugging Curl
提问by Matthew
I'd like to see what the post fields in the request are before I send it. (For debugging purposes).
我想在发送之前查看请求中的 post 字段是什么。（用于调试目的）。
The PHP library (class) I am using is already made (not by me), so I am trying to understand it.
我正在使用的 PHP 库（类）已经制作好了（不是我制作的），所以我想了解它。
As far as I can tell, it uses curl_setopt()to set different options like headers and such and then it uses curl_exec()to send the request.
据我所知，它用于curl_setopt()设置不同的选项，如标头等，然后curl_exec()用于发送请求。
Ideas on how to see what post fields are being sent?
关于如何查看正在发送的帖子字段的想法？
采纳答案by netom
You can enable the CURLOPT_VERBOSEoption:
您可以启用该CURLOPT_VERBOSE选项：
curl_setopt($curlhandle, CURLOPT_VERBOSE, true);
When CURLOPT_VERBOSEis set, output is written to STDERRor the file specified using CURLOPT_STDERR. The output is very informative.
当CURLOPT_VERBOSE被设置时，输出写入STDERR或使用指定的文件CURLOPT_STDERR。输出信息非常丰富。
You can also use tcpdump or wireshark to watch the network traffic.
您还可以使用 tcpdump 或 wireshark 来观察网络流量。
回答by hakre
You can enable the CURLOPT_VERBOSEoption and log that information to a (temporary) CURLOPT_STDERR:
您可以启用该CURLOPT_VERBOSE选项并将该信息记录到（临时）CURLOPT_STDERR：
// CURLOPT_VERBOSE: TRUE to output verbose information. Writes output to STDERR,
// or the file specified using CURLOPT_STDERR.
curl_setopt($handle, CURLOPT_VERBOSE, true);
$verbose = fopen('php://temp', 'w+');
curl_setopt($handle, CURLOPT_STDERR, $verbose);
You can then read it after curl has done the request:
您可以在 curl 完成请求后阅读它：
$result = curl_exec($handle);
if ($result === FALSE) {
printf("cUrl error (#%d): %s<br>\n", curl_errno($handle),
htmlspecialchars(curl_error($handle)));
}
rewind($verbose);
$verboseLog = stream_get_contents($verbose);
echo "Verbose information:\n<pre>", htmlspecialchars($verboseLog), "</pre>\n";
(I originally answered similar but more extendedin a related question.)
（我最初在一个相关问题中回答了类似但更广泛的问题。）
More information like metrics about the last request is available via curl_getinfo. This information can be useful for debugging curl requests, too. A usage example, I would normally wrap that into a function:
可通过 获得更多信息，例如有关上次请求的指标curl_getinfo。此信息也可用于调试 curl 请求。一个用法示例，我通常会将其包装到一个函数中：
$version = curl_version();
extract(curl_getinfo($handle));
$metrics = <<<EOD
URL....: $url
Code...: $http_code ($redirect_count redirect(s) in $redirect_time secs)
Content: $content_type Size: $download_content_length (Own: $size_download) Filetime: $filetime
Time...: $total_time Start @ $starttransfer_time (DNS: $namelookup_time Connect: $connect_time Request: $pretransfer_time)
Speed..: Down: $speed_download (avg.) Up: $speed_upload (avg.)
Curl...: v{$version['version']}
EOD;
回答by Mario S
Here is a simpler code for the same:
这是一个更简单的代码：
curl_setopt($ch, CURLOPT_VERBOSE, 1);
curl_setopt($ch, CURLOPT_STDERR, $fp);
where $fp is a file handle to output errors. For example:
其中 $fp 是输出错误的文件句柄。例如：
$fp = fopen(dirname(__FILE__).'/errorlog.txt', 'w');
( Read on http://curl.haxx.se/mail/curlphp-2008-03/0064.html)
回答by Micha?l R
Here is an even simplier way, by writing directly to php error output
这是一种更简单的方法，通过直接写入 php 错误输出
curl_setopt($curl, CURLOPT_VERBOSE, true);
curl_setopt($curl, CURLOPT_STDERR, fopen('php://stderr', 'w'));
回答by Andrew
To just get the info of a CURL request do this:
要获取 CURL 请求的信息，请执行以下操作：
$response = curl_exec($ch);
$info = curl_getinfo($ch);
var_dump($info);
回答by Nick Spicer
If you just want a very quick way to debug the result:
如果您只是想要一种非常快速的方法来调试结果：
$ch = curl_init();
curl_exec($ch);
$curl_error = curl_error($ch);
echo "<script>console.log($curl_error);</script>"
回答by mario
Another (crude) option is to utilize netcat for dumping the full request:
另一个（粗略）选项是利用 netcat 转储完整请求：
nc -l -p 8000 -w 3 | tee curldbg.txt
And of course sending the failing request to it:
当然，将失败的请求发送给它：
curl_setup(CURLOPT_URL, "http://localhost/testytest");
Notably that will always hang+fail, since netcat won't ever construct a valid HTTP response. It's really just for inspecting what really got sent. The better option, of course, is using a http request debugging service.
值得注意的是，这将始终挂起+失败，因为 netcat 永远不会构建有效的 HTTP 响应。这实际上只是为了检查真正发送的内容。当然，更好的选择是使用http 请求调试服务。
回答by Serhii Andriichuk
Output debug info to STDERR:
将调试信息输出到 STDERR：
$curlHandler = curl_init();
curl_setopt_array($curlHandler, [
CURLOPT_URL => 'https://postman-echo.com/get?foo=bar',
CURLOPT_RETURNTRANSFER => true,
/**
* Specify debug option
*/
CURLOPT_VERBOSE => true,
]);
curl_exec($curlHandler);
curl_close($curlHandler);
Output debug info to file:
输出调试信息到文件：
$curlHandler = curl_init();
curl_setopt_array($curlHandler, [
CURLOPT_URL => 'https://postman-echo.com/get?foo=bar',
CURLOPT_RETURNTRANSFER => true,
/**
* Specify debug option.
*/
CURLOPT_VERBOSE => true,
/**
* Specify log file.
* Make sure that the folder is writable.
*/
CURLOPT_STDERR => fopen('./curl.log', 'w+'),
]);
curl_exec($curlHandler);
curl_close($curlHandler);
See https://github.com/andriichuk/php-curl-cookbook#debug-request
见https://github.com/andriichuk/php-curl-cookbook#debug-request
