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<?php class SomeObject { private $name; public function __construct($name) { $this->name = $name; } } class SomeClass1 { private $object; public function __construct($object) { $this->object = $object; } public function getObject() { return $this->object; } } class SomeClass2 { private $object; public function __construct(&$object) { $this->object = $object; } public function getObject() { return $this->object; } } $object1 = new SomeObject('obj1'); $object2 = new SomeObject('obj2'); $someClass1 = new SomeClass1($object1); $someClass2 = new SomeClass2($object2); $object1 = null; $object2 = null; var_dump($someClass1->getObject()); var_dump($someClass2->getObject()); var_dump($object1); var_dump($object2);
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
object(SomeObject)#1 (1) { ["name":"SomeObject":private]=> string(4) "obj1" } object(SomeObject)#2 (1) { ["name":"SomeObject":private]=> string(4) "obj2" } NULL NULL
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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