3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = 0; $b = -0; echo $a; $echo $b;
Output for 5.6.0 - 5.6.30, 7.0.0 - 7.1.6
Parse error: syntax error, unexpected '$b' (T_VARIABLE) in /in/0YSGK on line 6
Process exited with code 255.
Output for hhvm-3.15.4
Fatal error: Uncaught Error: syntax error, unexpected T_VARIABLE in /in/0YSGK:6 Stack trace: #0 {main}
Process exited with code 255.