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<?php class Foo { public function __construct($x, $y) { $this->x = $x; $this->y = $y; } } $one = new Foo("foo", $a = [&$b]); $two = new Foo("foo", $b = [&$a]); var_dump($one == $two);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property Foo::$x is deprecated in /in/MZm12 on line 7 Deprecated: Creation of dynamic property Foo::$y is deprecated in /in/MZm12 on line 8 Deprecated: Creation of dynamic property Foo::$x is deprecated in /in/MZm12 on line 7 Deprecated: Creation of dynamic property Foo::$y is deprecated in /in/MZm12 on line 8 Fatal error: Nesting level too deep - recursive dependency? in /in/MZm12 on line 15
Process exited with code 255.

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