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<?php class Foo { private $id; public function __construct() { $this->id = 1; } public function __toString() { return $id . ""; } public function setId($id) { $this->id = $id; } } $a = new Foo; // $a is a pointer pointing to Foo object 0 $b = &$a; // $b is a pointer pointing to Foo object 0, however, $b is a copy of $a $a = new Foo(); $a->setId(231); var_dump($b); var_dump($a);
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.31, 7.1.0 - 7.1.23, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
object(Foo)#2 (1) { ["id":"Foo":private]=> int(231) } object(Foo)#2 (1) { ["id":"Foo":private]=> int(231) }
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
object(Foo)#2 (1) { ["id:private"]=> int(231) } object(Foo)#2 (1) { ["id:private"]=> int(231) }
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/IiCRS on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/IiCRS on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/IiCRS on line 4
Process exited with code 255.

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