3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 1.0; echo $a, "\n"; $a = number_format($a, 1); echo $a, "\n"; echo "1" + "1"; echo $a.$a; ?>
Output for 4.3.0 - 5.6.30, hhvm-3.10.1 - 3.17.3, 7.0.0 - 7.2.0
1 1.0 21.01.0