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<?php function bar(string $foo = null): string { return $foo; } bar(null);
Output for 8.4.1 - 8.4.13
Deprecated: bar(): Implicitly marking parameter $foo as nullable is deprecated, the explicit nullable type must be used instead in /in/3CrX5 on line 3 Fatal error: Uncaught TypeError: bar(): Return value must be of type string, null returned in /in/3CrX5:3 Stack trace: #0 /in/3CrX5(6): bar(NULL) #1 {main} thrown in /in/3CrX5 on line 3
Process exited with code 255.
Output for 8.1.1 - 8.1.33, 8.2.10 - 8.2.29, 8.3.0 - 8.3.4, 8.3.6 - 8.3.26
Fatal error: Uncaught TypeError: bar(): Return value must be of type string, null returned in /in/3CrX5:3 Stack trace: #0 /in/3CrX5(6): bar(NULL) #1 {main} thrown in /in/3CrX5 on line 3
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Fatal error: Uncaught TypeError: bar(): Return value must be of type string, null returned in /in/3CrX5:3 Stack trace: #0 /in/3CrX5(6): bar(NULL) #1 {main} thrown in /in/3CrX5 on line 3
Process exited with code 255.
Output for 7.0.0
Fatal error: Uncaught TypeError: Return value of bar() must be of the type string, null returned in /in/3CrX5:3 Stack trace: #0 /in/3CrX5(6): bar(NULL) #1 {main} thrown in /in/3CrX5 on line 3
Process exited with code 255.

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