#50477 [NEW]: curl_close() does not delete cURL handle as expected
From: pcdinh at gmail dot com
Operating system: Windows XP
PHP version: 5.2.11
PHP Bug Type: cURL related
Bug description: curl_close() does not delete cURL handle as expected
Description:
------------
As stated at http://php.net/manual/en/function.curl-close.php
an
invocation to curl_close($ch) will
"Closes a cURL session and frees all resources. The cURL handle, ch , is
also deleted. "
However, it does not.
Curl seems to work differently than other functions that produce a
resource as well. Curl does not pass by reference implicitly
For example:
// create an image resource
$image = imagecreate(100, 100);
$im = new stdClass();
$im->res = $image; // pass by reference
var_dump($image);
var_dump($im->res);
imagedestroy($image);
var_dump($image); // will print resource(4) of type (Unknown)
var_dump($im->res); // will print resource(4) of type (Unknown)
After calling imagedestroy($image), $image and $im->res are deleted
Reproduce code:
---------------
$s = curl_init();
$im = new stdClass();
$im->res = $s; // resource is passed by reference
var_dump($s); // will print: resource(5) of type (curl)
var_dump($im->res); // will print: resource(5) of type (curl)
curl_close($s);
var_dump($s);
var_dump($im->res);
Expected result:
----------------
$s = curl_init();
$im = new stdClass();
$im->res = $s; // resource is passed by reference
var_dump($s); // will print: resource(5) of type (curl)
var_dump($im->res); // will print: resource(5) of type (curl)
curl_close($s);
var_dump($s); // (expected): resource(5) of type (Unknown)
var_dump($im->res); // (expected): resource(5) of type (Unknown)
Actual result:
--------------
$s = curl_init();
$im = new stdClass();
$im->res = $s; // resource is actually passed by value
var_dump($s); // will print: resource(5) of type (curl)
var_dump($im->res); // will print: resource(5) of type (curl)
curl_close($s);
var_dump($s); // (actual): resource(5) of type (curl)
var_dump($im->res); // (actual): resource(5) of type (curl)
$s becomes invalid but $im->res is still valid for subsequent operations.
--
Edit bug report at http://bugs.php.net/?id=50477&edit=1
--
Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50477&r=trysnapshot52
Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50477&r=trysnapshot53
Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50477&r=trysnapshot60
Fixed in SVN: http://bugs.php.net/fix.php?id=50477&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50477&r=needdocs
Fixed in release: http://bugs.php.net/fix.php?id=50477&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=50477&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=50477&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=50477&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=50477&r=support
Expected behavior: http://bugs.php.net/fix.php?id=50477&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=50477&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=50477&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=50477&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50477&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=50477&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=50477&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=50477&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=50477&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=50477&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=50477&r=mysqlcfg
Thread (5 messages)
- pcdinh at gmail dot com