3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function rev($str) { return $str ? rev($str,1) : ""; } $txt = "Thomas"; echo rev($txt);
based on UtHHs
Output for 7.0.0 - 7.2.0
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 262144 bytes) in /in/LoMTG on line 4
Process exited with code 255.
Output for 5.5.24 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/LoMTG on line 4
Process exited with code 255.
Output for 5.4.9 - 5.4.45
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 130968 bytes) in /in/LoMTG on line 4
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 523800 bytes) in /in/LoMTG on line 4
Process exited with code 255.