3v4l.org

run code in 500+ PHP versions simultaneously
<?php namespace X; use Acme\Foo; var_dump(Foo::class); namespace X; var_dump(Foo::class);
Output for 8.2.31 - 8.2.33, 8.3.0 - 8.3.33, 8.4.1 - 8.4.25, 8.5.0 - 8.5.10
string(8) "Acme\Foo" string(5) "X\Foo"
preferences:
47.57 ms | 787 KiB | 4 Q