3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = [ 'PHP', 'Arrays', 'Funções', ]; function hashtag($x){ return "#".$x; } $y = array_map(function ($v, $k){ return "#".$v.$k; }, $array); print_r($y);
based on mO9kD
Output for 7.1.0 - 7.3.0alpha1
Fatal error: Uncaught ArgumentCountError: Too few arguments to function {closure}(), 1 passed and exactly 2 expected in /in/98hLS:12 Stack trace: #0 [internal function]: {closure}('PHP') #1 /in/98hLS(14): array_map(Object(Closure), Array) #2 {main} thrown in /in/98hLS on line 12
Process exited with code 255.
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.0.20
Warning: Missing argument 2 for {closure}() in /in/98hLS on line 12 Notice: Undefined variable: k in /in/98hLS on line 13 Warning: Missing argument 2 for {closure}() in /in/98hLS on line 12 Notice: Undefined variable: k in /in/98hLS on line 13 Warning: Missing argument 2 for {closure}() in /in/98hLS on line 12 Notice: Undefined variable: k in /in/98hLS on line 13 Array ( [0] => #PHP [1] => #Arrays [2] => #Funções )
Output for hhvm-3.15.4
Warning: __invoke() expects exactly 2 parameters, 1 given in /in/98hLS on line 13 Notice: Undefined variable: k in /in/98hLS on line 13 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/98hLS on line 13 Notice: Undefined variable: k in /in/98hLS on line 13 Warning: __invoke() expects exactly 2 parameters, 1 given in /in/98hLS on line 13 Notice: Undefined variable: k in /in/98hLS on line 13 Array ( [0] => #PHP [1] => #Arrays [2] => #Funções )