3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php ini_set('error_reporting', -1); ini_set('display_errors', 'on'); function generator() { $a = ['a', 'b', 'c']; if(empty($a)){ return null; } foreach($a as $i){ yield i; } } foreach(generator() as $i) { echo $i; }
based on GttMa
Output for 7.2.0 - 7.2.6
Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/TiF1I on line 13 i Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/TiF1I on line 13 i Warning: Use of undefined constant i - assumed 'i' (this will throw an Error in a future version of PHP) in /in/TiF1I on line 13 i
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.1.20
Notice: Use of undefined constant i - assumed 'i' in /in/TiF1I on line 13 i Notice: Use of undefined constant i - assumed 'i' in /in/TiF1I on line 13 i Notice: Use of undefined constant i - assumed 'i' in /in/TiF1I on line 13 i