3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php declare(strict_types=1); function foo(string $bar = null) { var_dump($bar); } foo('bar'); foo(); foo(null); foo(1);
based on F3sco
Output for 7.1.0 - 7.2.0
string(3) "bar" NULL NULL Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be of the type string or null, integer given, called in /in/SrVEs on line 12 and defined in /in/SrVEs:5 Stack trace: #0 /in/SrVEs(12): foo(1) #1 {main} thrown in /in/SrVEs on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20
string(3) "bar" NULL NULL Fatal error: Uncaught TypeError: Argument 1 passed to foo() must be of the type string, integer given, called in /in/SrVEs on line 12 and defined in /in/SrVEs:5 Stack trace: #0 /in/SrVEs(12): foo(1) #1 {main} thrown in /in/SrVEs on line 5
Process exited with code 255.
Output for 5.3.21 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/SrVEs on line 3 Catchable fatal error: Argument 1 passed to foo() must be an instance of string, string given, called in /in/SrVEs on line 9 and defined in /in/SrVEs on line 5
Process exited with code 255.