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<?php class A { var $a = 5; public $bg = [44,55]; public function __set($name, $value) { throw new Exception("Cannot add new property \$$name to instance of " . __CLASS__); } } $a=new A; echo $a->a; $a->a = 9; echo $a->a; $a->b = 88; echo $a->b;
Output for git.master_jit, git.master, rfc.property-hooks
59 Fatal error: Uncaught Exception: Cannot add new property $b to instance of A in /in/dmXf6:8 Stack trace: #0 /in/dmXf6(17): A->__set('b', 88) #1 {main} thrown in /in/dmXf6 on line 8
Process exited with code 255.

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