3v4l.org

run code in 300+ PHP versions simultaneously
<?php spl_autoload_register( function($classname) { $obj = new class { const SOME_CONST = 'foo'; // stuff... }; class_alias(get_class($obj), $classname, false); return $obj; } ); $obj = new Foo; var_dump($obj); echo Foo::SOME_CONST;
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
object(class@anonymous)#2 (0) { } foo
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 object(class@anonymous)#2 (0) { } foo
Output for 5.6.0 - 5.6.40
Parse error: syntax error, unexpected 'class' (T_CLASS) in /in/ar2Et on line 5
Process exited with code 255.

preferences:
224.33 ms | 401 KiB | 291 Q