Bug #52820 [Com]: curl doesn't write to php://temp or /memory

From: Date: Sun, 12 Sep 2010 17:31:26 +0000
Subject: Bug #52820 [Com]: curl doesn't write to php://temp or /memory
References: 1  Groups: php.bugs 
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Edit report at http://bugs.php.net/bug.php?id=52820&edit=1

 ID:                 52820
 Comment by:         klawd+phpbugs at kamundo dot de
 Reported by:        klawd+phpbugs at kamundo dot de
 Summary:            curl doesn't write to php://temp or /memory
 Status:             Feedback
 Type:               Bug
 Package:            Sockets related
 Operating System:   Ubuntu
 PHP Version:        5.3.3
 Block user comment: N

 New Comment:

Fixed test script, now with example.com.

$handle=curl_init('http://example.com');
curl_setopt($handle, CURLOPT_VERBOSE, true);
curl_setopt($handle, CURLOPT_STDERR, fopen('php://output', "w+"));
curl_exec($handle);
curl_setopt($handle, CURLOPT_STDERR, $output=fopen('php://temp',
"w+"));
curl_exec($handle);
rewind($output);
var_dump(stream_get_contents($output));

Please use var_dump. You will see that it's empty. There should be two
outputs:
- the one directly written to STDOUT
- one with string(n) and wrapped by var_dump's quotes
but the latter is empty:
string(0) ""

I tried both memory and temp


Previous Comments:
------------------------------------------------------------------------
[2010-09-12 13:37:48] cataphract@php.net

Anyway, this works here:

<?php
$handle=curl_init('http://www.google.com/');
curl_setopt($handle, CURLOPT_VERBOSE, true);
curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
curl_setopt($handle, CURLOPT_STDERR, $o = fopen('php://temp', "w+"));
curl_exec($handle);
rewind($o);
echo "output: ".stream_get_contents($o);

php://memory doesn't work because that stream cannot be cast into a
stdio FILE, which curl apparently requires.

------------------------------------------------------------------------
[2010-09-12 13:21:41] cataphract@php.net

Your description and your test script don't match. The first mentions
"php://memory", the script uses "php://temp".

Additionally, you don't specify open modes in the test script.

Seeing the source code, there's a small error in that persistent
resources are not accepted (ZEND_FETCH_RESOURCE2 should have been used),
but it should not cause the problem you're describing.

Please fix the problems with your bug report.

------------------------------------------------------------------------
[2010-09-12 02:05:23] klawd+phpbugs at kamundo dot de

Description:
------------
Setting CURLOPT_STDERR to fopen('php://output', 'w') will write curl
debug output.

One would await that setting it to fopen('php://memory', 'w') would
store it in the memory and it would be available after a rewind. That is
not the case, instead, a warning is raised:

Warning: curl_setopt(): supplied argument is not a valid File-Handle
resource in

is php://output a valid file handle resource?

This is very confusing and it should be possible to store the output in
the memory.

Test script:
---------------
$handle=curl_init('http://google.com');
curl_setopt($handle, CURLOPT_STDERR, fopen('php://output'));
curl_exec($handle);
curl_setopt($handle, CURLOPT_STDERR, $output=fopen('php://temp'));
curl_exec($handle);
rewind($output);
var_dump($output);



------------------------------------------------------------------------



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Edit this bug report at http://bugs.php.net/bug.php?id=52820&edit=1


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