3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $str = "helloworld"; echo isset($str['f'][0]) ? 1 : 0;
Output for 4.3.0 - 5.3.29, 7.0.0 - 7.1.0
0
Output for 5.4.0 - 5.6.25, hhvm-3.10.0 - 3.12.0
1