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<?php class First { public $foo = 5; public function ffunc(){ $bar = $this->$foo + 3; return $bar; } } $res = new First(); echo $res->ffunc();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $foo in /in/agn9B on line 8 Warning: Undefined property: First::$ in /in/agn9B on line 8 3

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