3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function add($zahl, $zaehl){ return zahl - zaehl; } echo add(21, 21);
based on CUBUi
Output for 7.2.0 - 7.3.0beta1
Warning: Use of undefined constant zahl - assumed 'zahl' (this will throw an Error in a future version of PHP) in /in/NafUX on line 4 Warning: Use of undefined constant zaehl - assumed 'zaehl' (this will throw an Error in a future version of PHP) in /in/NafUX on line 4 Warning: A non-numeric value encountered in /in/NafUX on line 4 Warning: A non-numeric value encountered in /in/NafUX on line 4 0
Output for 7.1.0 - 7.1.20
Notice: Use of undefined constant zahl - assumed 'zahl' in /in/NafUX on line 4 Notice: Use of undefined constant zaehl - assumed 'zaehl' in /in/NafUX on line 4 Warning: A non-numeric value encountered in /in/NafUX on line 4 Warning: A non-numeric value encountered in /in/NafUX on line 4 0
Output for 4.3.0 - 7.0.20
Notice: Use of undefined constant zahl - assumed 'zahl' in /in/NafUX on line 4 Notice: Use of undefined constant zaehl - assumed 'zaehl' in /in/NafUX on line 4 0