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run code in 300+ PHP versions simultaneously
<?php var_dump(b3); var_dump((int) '3'); var_dump((integer) '3'); var_dump((int) '1000'); var_dump((integer) '1000');
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 "b3" in /in/58ifs:3 Stack trace: #0 {main} thrown in /in/58ifs 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 b3 - assumed 'b3' (this will throw an Error in a future version of PHP) in /in/58ifs on line 3 string(2) "b3" int(3) int(3) int(1000) int(1000)
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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Notice: Use of undefined constant b3 - assumed 'b3' in /in/58ifs on line 3 string(2) "b3" int(3) int(3) int(1000) int(1000)

preferences:
284.54 ms | 404 KiB | 451 Q