3v4l.org

run code in 300+ PHP versions simultaneously
<?php if ( !defined("System") && !defined ("out")) { System.out.print('Hi'); }
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
Fatal error: Uncaught Error: Undefined constant "System" in /in/pWVU9:3 Stack trace: #0 {main} thrown in /in/pWVU9 on line 3
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant System - assumed 'System' (this will throw an Error in a future version of PHP) in /in/pWVU9 on line 3 Warning: Use of undefined constant out - assumed 'out' (this will throw an Error in a future version of PHP) in /in/pWVU9 on line 3 Hi
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 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 System - assumed 'System' in /in/pWVU9 on line 3 Notice: Use of undefined constant out - assumed 'out' in /in/pWVU9 on line 3 Hi

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344.77 ms | 404 KiB | 453 Q