When using the PHP curl functions, is there anyway to see the exact raw headers that curl is sending to the server?
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4 Answers
You can use curl_getinfo:
Before the call
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
After
$headers = curl_getinfo($ch, CURLINFO_HEADER_OUT);
2 Comments
Chadwick Meyer
Unfortunately, this doesn't show the body of the cURL request. Does anyone know how to show that? Obviously we pass the body to cURL, but for debugging I would like to see EXACTLY what cURL is sending.
Simon E.
@ChadwickMeyer I'm looking for the same thing: how to show both the headers and the request body. Doesn't seem to be possible. :-(
<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
curl_exec($ch);
var_dump(curl_getinfo($ch,CURLINFO_HEADER_OUT));
?>
Only available in php 5.1.3 http://php.net/manual/en/function.curl-getinfo.php
You can verify that they are the same by using your console and hitting
curl http://example.com/ -I
or
curl --trace-ascii /file.txt http://example.com/
answered Apr 7, 2011 at 17:38
angelfilm entertainment
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Comments
AFAIK, the PHP/CURL binding still lacks proper support for CURLOPT_DEBUGFUNCTION which is a callback from libcurl that can provide all those details.
That's the primary reason why I recommend people to work out HTTP scripting things with the curl command line tool and its --trace-ascii option FIRST, then translate that into a PHP function.
1 Comment
Alana Storm
It looks like you're right, I poked around the latest stable PHP source a bit, and it looks like they use CURLOPT_DEBUGFUNCTION to implement their CURLINFO_HEADER_OUT options, but they don't expose a fully featured CURLOPT_DEBUGFUNCTION of their own. Side note: I remember your emails from the php curl mailing list. I'm amazed you still have the patience to do any kind of PHP related libcurl support :)
be sure to set the CURLINFO_HEADER_OUT option before making the curl_getinfo call
curl_setopt($c, CURLINFO_HEADER_OUT, true);
2 Comments
pcdinh
@Janek It should be read as follows: curl_setopt($c, CURLOPT_HEADER, true);
gawpertron
Janek is correct, CURLINFO_HEADER_OUT is the option to set if you want to view the header using curl_getinfo() it is documented here php.net/manual/en/function.curl-setopt.php