3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php for($i=1;$i<=5;$i++) { for($j=1;$j<=$i;$j++) { echo $j; } echo "<br />"; }
Output for 4.3.0 - 7.2.0
1<br />12<br />123<br />1234<br />12345<br />