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<?php class x { private $p = 'secret'; } $o = new x; $f = function(){ return $this->p; }; $g = $f; Closure::bind($f,$o); //echo $f->__invoke(),"\n"; echo $f(),"\n"; echo $g->call($o);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Using $this when not in object context in /in/1lhk1:6 Stack trace: #0 /in/1lhk1(10): {closure}() #1 {main} thrown in /in/1lhk1 on line 6
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Fatal error: Using $this when not in object context in /in/1lhk1 on line 6
Process exited with code 255.

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