3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a[1]=''; $b = isset($a[1]); $c = isset($a[2]); echo 'a='.$a; echo 'b='.$b;
based on rQ06c
Output for 5.5.0 - 7.2.0
Notice: Array to string conversion in /in/ra0l8 on line 6 a=Arrayb=1