3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $var=10; $a=''; for($i=1;$i<=$var;$i++){ $a.=$i; } echo $a; ?>
based on Dh1O1
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
12345678910