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<?php trait trt { protected $prop; } class inst { use trt; public function set($x) { $this->prop = $x; } public function get() { return $this->prop; } } $a = new inst(); $a->set("foo"); $b->set("bar"); echo $a->get(); echo "\n"; echo $b->get();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $b in /in/G1FUb on line 18 Fatal error: Uncaught Error: Call to a member function set() on null in /in/G1FUb:18 Stack trace: #0 {main} thrown in /in/G1FUb on line 18
Process exited with code 255.

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