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<?php declare(strict_types=1); $foo = function (string $bar = null ) { var_dump($bar); }; $foo(); $foo(null); $foo('100'); $foo(100); $foo([100]);
based on CefAM
Output for 7.1.0 - 7.2.0
NULL NULL string(3) "100" Fatal error: Uncaught TypeError: Argument 1 passed to {closure}() must be of the type string or null, integer given, called in /in/OkYTH on line 13 and defined in /in/OkYTH:6 Stack trace: #0 /in/OkYTH(13): {closure}(100) #1 {main} thrown in /in/OkYTH on line 6
Process exited with code 255.
Output for 7.0.0 - 7.0.20
NULL NULL string(3) "100" Fatal error: Uncaught TypeError: Argument 1 passed to {closure}() must be of the type string, integer given, called in /in/OkYTH on line 13 and defined in /in/OkYTH:6 Stack trace: #0 /in/OkYTH(13): {closure}(100) #1 {main} thrown in /in/OkYTH on line 6
Process exited with code 255.
Output for 5.4.9 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/OkYTH on line 3 NULL NULL Catchable fatal error: Argument 1 passed to {closure}() must be an instance of string, string given, called in /in/OkYTH on line 12 and defined in /in/OkYTH on line 6
Process exited with code 255.
Output for 5.3.19 - 5.3.29
Warning: Unsupported declare 'strict_types' in /in/OkYTH on line 3 Parse error: syntax error, unexpected '[', expecting ')' in /in/OkYTH on line 15
Process exited with code 255.