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

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