3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a='hello world'; $b = a[5]; echo $b;
Output for 7.2.0 - 7.2.6
Warning: Use of undefined constant a - assumed 'a' (this will throw an Error in a future version of PHP) in /in/lJqlj on line 3 Notice: Uninitialized string offset: 5 in /in/lJqlj on line 3
Output for 5.6.0 - 7.1.20
Notice: Use of undefined constant a - assumed 'a' in /in/lJqlj on line 3 Notice: Uninitialized string offset: 5 in /in/lJqlj on line 3
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.5.38
Parse error: syntax error, unexpected '[' in /in/lJqlj on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/lJqlj on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/lJqlj on line 3
Process exited with code 255.