3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $f = function ($f) use (&$f) { $f($f); }; $f($f);
Output for 7.1.0
Fatal error: Cannot use lexical variable $f as a parameter name in /in/H9M3n on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.14
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 262144 bytes) in /in/H9M3n on line 4
Process exited with code 255.
Output for hhvm-3.12.0
Fatal error: Stack overflow in /in/H9M3n on line 4
Process exited with code 255.
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.5.24 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/H9M3n on line 4
Process exited with code 255.
Output for 5.4.0 - 5.4.45
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 130968 bytes) in /in/H9M3n on line 4
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 523800 bytes) in /in/H9M3n on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION in /in/H9M3n on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION in /in/H9M3n on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/H9M3n on line 3
Process exited with code 255.