3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $function = new ReflectionFunction(function (&$a) {}); echo $function . "\n"; foreach ($function->getParameters() as $parameter) { echo $parameter . "\n"; }
based on loAWa
Output for 7.0.0 - 7.1.0
Closure [ <user, prototype Closure> function {closure} ] { @@ /in/KBoee 3 - 3 - Parameters [1] { Parameter #0 [ <required> &$a ] } } Parameter #0 [ <required> &$a ]
Output for 5.3.0 - 5.6.28, hhvm-3.12.0
Closure [ <user> function {closure} ] { @@ /in/KBoee 3 - 3 - Parameters [1] { Parameter #0 [ <required> &$a ] } } Parameter #0 [ <required> &$a ]
Output for hhvm-3.10.0

Process exited with code 153.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/KBoee 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, expecting ')' in /in/KBoee on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/KBoee on line 3
Process exited with code 255.