3v4l.org

run code in 300+ PHP versions simultaneously
<?php spl_autoload_register(function($class) { if ($class === 'MyClass') { eval(<<<'PHP' class MyClass {} PHP ); } }); register_shutdown_function(function() { new MyClass; }); eval(<<<'PHP' $x = ['x']; foreach ($x as $i) { $y[]; } PHP );
Output for 7.0.18 - 7.0.33, 7.1.4 - 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, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
Fatal error: Cannot use [] for reading in /in/pnZHQ(16) : eval()'d code on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.17, 7.1.0 - 7.1.3
Fatal error: Cannot use [] for reading in /in/pnZHQ(19) : eval()'d code on line 3
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Fatal error: Cannot use [] for reading in /in/pnZHQ(21) : eval()'d code on line 3
Process exited with code 139.
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163.67 ms | 408 KiB | 5 Q