3v4l.org

run code in 300+ PHP versions simultaneously
<?php namespace Foo { function bar() { if (is_callable('Foo\\time')) { var_dump(\Foo\time()); } } } namespace { \Foo\bar(); eval('namespace Foo; function time() { return -1; }'); \Foo\bar(); }
Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(-1)

preferences:
127.41 ms | 402 KiB | 89 Q