3v4l.org

run code in 300+ PHP versions simultaneously
<?php use foo\bar; #[bar] function foo() { } print (new ReflectionFunction('foo'))->getAttributes()[0]->getName();
Output for 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
foo\bar

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37.75 ms | 406 KiB | 5 Q