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run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = "Foo"; var_dump($a{4});
Output for 5.2.10 - 5.6.30, hhvm-3.13.2 - 3.17.3, 7.0.0 - 7.2.0
Notice: Uninitialized string offset: 4 in /in/rRfvI on line 4 string(0) ""
Output for hhvm-3.10.1 - 3.12.14
string(0) ""
Output for 4.3.0 - 5.2.9
Notice: Uninitialized string offset: 4 in /in/rRfvI on line 4 string(0) ""