3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo implements Countable { public function count() { return +INF; } } $foo = new Foo; echo count($foo);
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of Foo::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/qv7jg on line 6 0
Output for 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 7.0.0 - 7.0.20, 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
0
Output for 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
-9223372036854775808
preferences:
178.56 ms | 402 KiB | 283 Q