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run code in 500+ PHP versions simultaneously
<?php interface X { public function read($foo): void; } class Y implements X { public function read(string $foo): void { echo $foo; } } (new Y)->read('bar');
Output for 8.5.0 - 8.5.3
Fatal error: Declaration of Y::read(string $foo): void must be compatible with X::read($foo): void in /in/h6Ehe on line 10 Stack trace: #0 {main}
Process exited with code 255.
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.4, 8.3.6 - 8.3.30, 8.4.1 - 8.4.18
Fatal error: Declaration of Y::read(string $foo): void must be compatible with X::read($foo): void in /in/h6Ehe on line 10
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: Declaration of Y::read(string $foo): void must be compatible with X::read($foo): void in /in/h6Ehe on line 10
Process exited with code 255.

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