3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $foo = 'asdf'; $foo[1] = null; echo $foo;
Output for 7.1.0
Warning: Cannot assign an empty string to a string offset in /in/L5V0d on line 3 asdf
Output for 4.3.0 - 7.0.14
adf