3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $i = '1a1'; for ($i = '1a1'; $i < 10; ++$i) { echo $i; }
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1a11a21a31a41a51a61a71a81a91b01b11b21b31b41b51b61b71b81b91c01c11c21c31c41c51c61c71c81c91d01d11d21d31d41d51d61d71d81d91e023456789