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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
int(-1)

preferences:
94.03 ms | 406 KiB | 5 Q