3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types = 0); $a = function (string $it) { var_dump($it); }; $a(null);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: {closure}(): Argument #1 ($it) must be of type string, null given, called in /in/nQB93 on line 9 and defined in /in/nQB93:5 Stack trace: #0 /in/nQB93(9): {closure}(NULL) #1 {main} thrown in /in/nQB93 on line 5
Process exited with code 255.
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Fatal error: Uncaught TypeError: Argument 1 passed to {closure}() must be of the type string, null given, called in /in/nQB93 on line 9 and defined in /in/nQB93:5 Stack trace: #0 /in/nQB93(9): {closure}(NULL) #1 {main} thrown in /in/nQB93 on line 5
Process exited with code 255.
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/nQB93 on line 3 Catchable fatal error: Argument 1 passed to {closure}() must be an instance of string, null given, called in /in/nQB93 on line 9 and defined in /in/nQB93 on line 5
Process exited with code 255.

preferences:
165.35 ms | 402 KiB | 183 Q