3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo(string $b) { return $b; } var_dump(foo()); var_dump('foo' == (bool) 'foo');
based on vVFKW
Output for 7.1.0 - 7.2.0
Fatal error: Uncaught ArgumentCountError: Too few arguments to function foo(), 0 passed in /in/BhHcb on line 7 and exactly 1 expected in /in/BhHcb:3 Stack trace: #0 /in/BhHcb(7): foo() #1 {main} thrown in /in/BhHcb on line 3
Process exited with code 255.
Output for 7.0.0 - 7.0.20
Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be of the type string, none given, called in /in/BhHcb on line 7 and defined in /in/BhHcb:3 Stack trace: #0 /in/BhHcb(7): foo() #1 {main} thrown in /in/BhHcb on line 3
Process exited with code 255.
Output for 5.3.19 - 5.6.28
Catchable fatal error: Argument 1 passed to foo() must be an instance of string, none given, called in /in/BhHcb on line 7 and defined in /in/BhHcb on line 3
Process exited with code 255.