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<?php define('ROZWAL', true); if(rozwal == true) print 'elo';
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.21, 8.3.0 - 8.3.9
Fatal error: Uncaught Error: Undefined constant "rozwal" in /in/taag9:5 Stack trace: #0 {main} thrown in /in/taag9 on line 5
Process exited with code 255.
Output for 7.2.5 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant rozwal - assumed 'rozwal' (this will throw an Error in a future version of PHP) in /in/taag9 on line 5 elo
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant rozwal - assumed 'rozwal' in /in/taag9 on line 5 elo

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