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Bug #74862 Unable to clone instance when private __clone defined
Submitted: 2017-07-06 04:23 UTC Modified: 2017-10-05 11:09 UTC
From: daniel at ciokix dot ro Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 7.0.24 OS: Ubuntu 14.04
Private report: No CVE-ID: None
 [2017-07-06 04:23 UTC] daniel at ciokix dot ro
When defining the __clone magic method as private, the instance cannot be cloned from within the method implementing parent class.

Test script:
class a {
    private function __clone()
    private function __construct()
    public static function getInstance()
        return new static();
    public function cloneIt()
        $a = clone $this;
        return $a;

class c extends a {


// private constructor
$d = c::getInstance();

// private clone
$e = $d->cloneIt();

Link to 3v4l:

Expected result:
Expecting the same behavior as for __construct: a successfully cloned object.

Actual result:
The following misleading fatal error is thrown:
Fatal error: Uncaught Error: Call to private c::__clone() from context 'a'

which is not the case as clone is called from a context and not c.


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 [2017-07-06 06:36 UTC] spam2 at rhsoft dot net
the only probably bug here is that you don't get a error message that you can't set arbitrary magic methods as private like you get it for __construct() and __get() but given that PHP5 is EOL I won't expect that to change
 [2017-10-05 11:09 UTC]
-Status: Open +Status: Verified -PHP Version: 5.6.30 +PHP Version: 7.0.24
 [2017-11-15 22:02 UTC]
Automatic comment on behalf of
Log: Fixed #74862: Unable to clone instance when private __clone defined
 [2017-11-15 22:02 UTC]
-Status: Verified +Status: Closed
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