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<?php class Foo { var $dateTime; var $string; public function __construct() { $this->dateTime = new \DateTime(); $this->string = 'foo'; } public function __clone() { $this->dateTime = clone $this->dateTime; } } $obj1 = new Foo(); $obj2 = clone $obj1; $obj1->string = 'foo bar'; $obj1->dateTime->add(new \DateInterval('P1Y')); var_dump($obj1->dateTime->format('Y-m-d')); var_dump($obj1->string); var_dump($obj2->dateTime->format('Y-m-d')); var_dump($obj2->string);
Output for git.master, git.master_jit, rfc.property-hooks
string(10) "2018-07-03" string(7) "foo bar" string(10) "2017-07-03" string(3) "foo"

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