3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php for ($a = 0; $a < 4 && a !== 2; $a++) { echo $a; }
Output for 7.2.0 - 7.3.0rc4
Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/198lE on line 2 0 Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/198lE on line 2 1 Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/198lE on line 2 2 Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/198lE on line 2 3
Output for 4.3.0 - 7.1.20
Notice: Use of undefined constant a - assumed 'a' in /in/198lE on line 2 0 Notice: Use of undefined constant a - assumed 'a' in /in/198lE on line 2 1 Notice: Use of undefined constant a - assumed 'a' in /in/198lE on line 2 2 Notice: Use of undefined constant a - assumed 'a' in /in/198lE on line 2 3