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I have a PHP script that primes my website cache.

I'm trying to bypass the Nginx frontend and grab the headers from the Apache backend.

The following example works (via command line) :

curl -I -H "Host: example.com" 127.0.0.1

However, when I try to do the same in PHP - it does not.

$headers = array("Host: example.com");
$url = "127.0.0.1";
$ch = curl_init();
curl_setopt ($ch, CURLOPT_URL, $url);
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, 60);
curl_setopt ($ch, CURLOPT_HEADER, true);
curl_setopt ($ch, CURLOPT_NOBODY, true);
curl_setopt ($ch, CURLOPT_HTTPHEADER, $headers);
$ret = curl_exec ($ch);
curl_close ($ch);

echo "$ret";

This always returns the first website listed in my apache virtualhost files - not the website listed in the 'host' http headers.

Any idea why it works just fine via command line - but not in the php script?

KingCrunch
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Dave
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2 Answers2

0

I don't know if it is possible at all, however what I would try is to pass the URL at init:

$ch = curl_init($url);

And then not with curl_setopt. It's just a suggestion to test, no guarantee this helps. So more a lengthy comment.

You can also enable verbose mode and see what specifically curl sends for request headers, I have outlined this in an answer here: Bad Request. Connecting to sites via curl on host and system. This should show what is going on behind the curtain, very useful if you do not yet sniff the network traffic.

Community
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hakre
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  • Thank you, I'll check out the link and see if I can figure out what is happening. – Dave Jan 07 '13 at 01:55
  • Take a look if you can gather the verbose output. You can add it to your question, that should make your problem description more concrete. – hakre Jan 07 '13 at 02:02
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I think here is the answer.

"Do this instead: 

$host = "www.example.com"; 
$url = "http://$host/"; 

$ch = curl_init(); 

curl_setopt($ch, CURLOPT_URL, $url);

"

rzymek
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  • I assume that Dave wants to explicitly set the `Host:` request header different to the IP address. E.g. to pass a hostname that does not resolve to that IP or for testing purposes. – hakre Jan 06 '13 at 22:54