3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function fib($n){ if($n == 0){ return 1; } return fib($n - 2) + fib($n - 1); } print fib(5);
based on 79bFS
Output for 7.0.0 - 7.1.0, 7.1.6 - 7.1.7, 7.2.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 262144 bytes) in /in/44X1d on line 4
Process exited with code 255.
Output for 7.1.5, 7.1.10

Process exited with code 137.
Output for 5.4.11 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 130968 bytes) in /in/44X1d on line 7
Process exited with code 255.
Output for 5.3.21 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 523800 bytes) in /in/44X1d on line 7
Process exited with code 255.