- Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- Warning: Undefined array key "hello" in /in/uYM30 on line 5 universe
- Output for 7.4.0 - 7.4.33
- Notice: Undefined index: hello in /in/uYM30 on line 5 universe
<?php
$a = [];
print $a['hello'] ? 'world' : 'universe';
print "\n";