3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo() { function bar() { echo "world\n"; } echo "hello, " . bar(); } foo();
based on oSBaV
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.28 - 7.2.9
world hello,