3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 1; $b = 1; for ($i = 0; $i <= 10; $i++) { list($a, $b) = array($b, $a + $b); echo $b . ' '; }
Output for 4.3.0 - 7.1.0
2 3 5 8 13 21 34 55 89 144 233