3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 'abc'; debug_zval_dump($a{3});
Output for 5.2.10 - 5.6.22, 7.0.0 - 7.1.0
Notice: Uninitialized string offset: 3 in /in/EEhjD on line 4 string(0) "" refcount(1)
Output for hhvm-3.10.0 - 3.12.0
string(0) "" refcount(1)
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: 3 in /in/EEhjD on line 4 string(0) "" refcount(1)