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run code in 300+ PHP versions simultaneously
<?php function fibo($count){ if($count == 0 || $count == 1){ return 1; } else { return fibo($count - 1) + fibo($count - 2); } } fibo(100);
Output for 5.6.38, 7.1.22, 7.2.10 - 7.2.33, 7.3.16 - 7.3.33, 7.4.3 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4

Process exited with code 137.

preferences:
117.4 ms | 403 KiB | 139 Q