3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function someFunction() { } $functionVariable = 'someFunction'; var_dump(is_callable($functionVariable, false, $callable_name)); // bool(true) echo $callable_name, "\n"; // someFunction
Output for 4.3.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true) someFunction
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/tIBSa on line 11
Process exited with code 255.