3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $array = [ '7.2' => 1, '72' => 2]; foreach( $array as $k => $v) { print $k[0].PHP_EOL; print 'a'.PHP_EOL; }
based on nAiFi
Output for 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.30 - 7.3.0alpha1
7 a a