3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $x=5;/* this multiline comment */ $y=10; //this is global echo $y; echo '<br>'; function add(){ $GLOBALS['a']=$GLOBALS['x']+$GLOBALS['y']; echo $a; } add(); echo $a;
based on TJhRO
Output for 5.0.4 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
10<br> Notice: Undefined variable: a in /in/9XBFo on line 8 15
Output for 4.3.0 - 5.0.3
10<br> Notice: Undefined variable: a in /in/9XBFo on line 8 15