3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print empty(' ');
Output for 5.5.24 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.4.0 - 5.4.45
Parse error: syntax error, unexpected '' '' (T_CONSTANT_ENCAPSED_STRING) in /in/strSQ on line 2
Process exited with code 255.
Output for 5.3.0 - 5.3.29
Parse error: syntax error, unexpected T_CONSTANT_ENCAPSED_STRING in /in/strSQ on line 2
Process exited with code 255.