3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace foo\bar { const baz = 42; } namespace { use foo\bar\baz; var_dump ( baz ); } namespace { use foo\bar as foo_bar; use foo\BAZ as FOO_BAZ; var_dump ( foo_bar () ); var_dump ( FOO_BAZ ); }

preferences:
36.67 ms | 402 KiB | 5 Q