3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo gettype(NaN);
Output for 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: Undefined constant "NaN" in /in/IlT57:3 Stack trace: #0 {main} thrown in /in/IlT57 on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant NaN - assumed 'NaN' (this will throw an Error in a future version of PHP) in /in/IlT57 on line 3 string
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, 7.1.0 - 7.1.33
Notice: Use of undefined constant NaN - assumed 'NaN' in /in/IlT57 on line 3 string

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