i have discovered that this does work, partially, for some urls.
im not sure what is preventing this from working on all urls, but even for ones where it does work, the entire result is not placed in the buffer.
here is a modification of peters code, which illustrates 2 urls that work partially, one is the google translate 'api', the other is php.net.

<?php
#$c = curl_init("http://example.com");
#$c = curl_init("http://google.com/translate_t?langpair=en%7Cfr&text=newspaper");
$c = curl_init("http://php.net");
$st = fopen('php://memory', 'r');

curl_setopt($c, CURLOPT_FILE, $st);
curl_setopt($c, CURLOPT_USERAGENT, 'Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11) Gecko/20080115 Firefox/2.0.0.11');

if(!curl_exec($c)) die ("error: ".curl_error($c));
curl_close($c);


rewind($st);
/*
$str =  fgets($st);
var_dump($str);
*/
echo stream_get_contents($st);
#echo "Content|".htmlspecialchars(stream_get_contents($st))."|/Content";
fclose($st);
?>

I can reproduce the bug.

I downloaded the link provided on the bug by jani (php 5.2 snapshot).

I built php (and had to also download and build libcurl).

My exact configuration line for the php was:
./configure --prefix=/home/danh/staging/php/2008_09_12_c --with-curl=/home/danh/staging/curl/2008_09_12
where the funky directory name is where i installed the curl i built.  (For the curl i used no options in the configuration except where to install it.)

My system is ubuntu 7.10.

It would be terrific to fix the bug because curl is so useful and having arbitrary streams is so useful: at least streams to memory.

Thanks everybody for your efforts on refining php.

Sorry, not confirmed

I was checking it whit my own website address in the example code and everything looked fine. However with example.org or google.com it's not working!

Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows:

  http://windows.php.net/snapshots/

And provide the full configure line you used if the snapshot does not 
work.

I built again, and tried Peter's test again, and it failed again.

But note that with either the build from today or yesterday it
gives partial results for the wikipedia (it looks like it loses
the last 497 characters).

My configuration command is:

./configure --prefix=/home/danh/staging/php/2008_12_11_a --with-curl=/home/danh/staging/curl/2008_09_12

dan

No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".

I got the same problem. I'm trying to submit data by PUT request and aparently memory streams don't work for just a single CURL option:

curl_setopt($ch, CURLOPT_INFILESIZE, $input_size);

Aparently some servers don't like when you submit data w/o the content-size.

But... how to obtain the size of a memory stream?

Davi

Well, I just discovered that I can use fstat to get the size of a stream (even memory ones).

Follows the test case:

$fi = fopen('php://temp', 'rb+');

// fill the $fi stream with some data

$input_stat = fstat($fi);
$input_size = $input_stat['size'];

curl_setopt($ch, CURLOPT_PUT, true);
curl_setopt($ch, CURLOPT_INFILE, $fi);
curl_setopt($ch, CURLOPT_INFILESIZE, $input_size);

curl_exec($ch);

Davi

The final workaround I currently use is setting both CURLOPT_WRITEFUNCTION and CURLOPT_READFUNCTION options. So I can write and read using the memory stream, even being unsupported by CURL:

// open the memory stream (currently using "temp" but it should works with "memory" stream as well):
$temp = fopen('php://temp', 'rb+');

function cb_curl_write($ch, $data) {
	global $temp;

	return fwrite($temp, $data);
}

function cb_curl_read($ch, $fd, $size) {
	global $temp;

	return fread($temp, $size);
}

// put some data into the stream:
// TODO

rewind($temp);

// get the content size of the stream
$input_stat = fstat($temp);
$input_size = $input_stat['size'];

$ch = curl_init('http://www.php.net/');

curl_setopt($ch, CURLOPT_PUT, true);
curl_setopt($ch, CURLOPT_INFILESIZE, $input_size);
curl_setopt($ch, CURLOPT_WRITEFUNCTION, 'cb_curl_write');
curl_setopt($ch, CURLOPT_READFUNCTION, 'cb_curl_read');

curl_exec($ch);
curl_close($ch);