3v4l.org

run code in 500+ PHP versions simultaneously
<?php namespace Foo; class Bar { public static function testClass(): \Closure { return function(){}; } } function testFunc(): \Closure { return function(){}; } var_dump((new \ReflectionFunction(Bar::testClass()))->getNamespaceName()); var_dump((new \ReflectionFunction(testFunc()))->getNamespaceName());
Output for 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(0) "" string(0) ""
Output for 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30
string(3) "Foo" string(3) "Foo"
preferences:
50.07 ms | 970 KiB | 4 Q