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<?php $o = new stdClass; $GLOBALS['this'] = $o; var_dump($this);
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Cannot re-assign $this in /in/ijdOQ:3 Stack trace: #0 {main} thrown in /in/ijdOQ on line 3
Process exited with code 255.
Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
Fatal error: Uncaught Error: Using $this when not in object context in /in/ijdOQ:4 Stack trace: #0 {main} thrown in /in/ijdOQ on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33
object(stdClass)#1 (0) { }

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