3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function reduce(int $a, int $b, callback $reducer) : int { return $reducer($a, $b); } reduce(1, 2, function($a, $b, $c){ return $a + $b + $c; });
Output for 7.0.0 - 7.2.0
Fatal error: Uncaught TypeError: Argument 3 passed to reduce() must be an instance of callback, instance of Closure given, called in /in/4iIs6 on line 9 and defined in /in/4iIs6:3 Stack trace: #0 /in/4iIs6(9): reduce(1, 2, Object(Closure)) #1 {main} thrown in /in/4iIs6 on line 3
Process exited with code 255.
Output for 5.1.0 - 5.6.28
Parse error: syntax error, unexpected ':', expecting '{' in /in/4iIs6 on line 3
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected ':', expecting '{' in /in/4iIs6 on line 3
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting ')' in /in/4iIs6 on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting ')' in /in/4iIs6 on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/4iIs6 on line 3
Process exited with code 255.