3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php error_reporting(E_ALL); $b = array(); var_dump($b['foo']); $b = null; var_dump($b['foo1']); $b = "string"; var_dump($b['foo2']); $b = 345678; var_dump($b['foo3']);
based on AfDJK
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Notice: Undefined index: foo in /in/18qM5 on line 4 NULL NULL Warning: Illegal string offset 'foo2' in /in/18qM5 on line 10 string(1) "s" NULL
Output for 5.3.0 - 5.3.29, hhvm-3.10.0 - 3.12.0
Notice: Undefined index: foo in /in/18qM5 on line 4 NULL NULL string(1) "s" NULL
Output for 5.2.3 - 5.2.17
Notice: Undefined index: foo in /in/18qM5 on line 4 NULL NULL string(1) "s" NULL
Output for 4.3.0 - 5.2.2
<br /> <b>Notice</b>: Undefined index: foo in <b>/in/18qM5</b> on line <b>4</b><br /> NULL NULL string(1) "s" NULL