3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?hh echo "Hello World!";
Output for 5.4.0 - 5.6.30, 7.0.0 - 7.1.2
Parse error: syntax error, unexpected 'echo' (T_ECHO) in /in/nu4hp on line 3
Process exited with code 255.
Output for hhvm-3.10.1 - 3.17.3
Hello World!
Output for 5.3.0 - 5.3.29
<?hh echo "Hello World!";