3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 5; $b = 7; echo "The sum of $a and $b is ".sum($a+$b); ?>
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function sum() in /in/YSJhE:5 Stack trace: #0 {main} thrown in /in/YSJhE on line 5
Process exited with code 255.
Output for 5.0.0 - 5.6.28
Fatal error: Call to undefined function sum() in /in/YSJhE on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: sum() in /in/YSJhE on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: sum() in /in/YSJhE on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: sum() in /in/YSJhE on line 5