3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = 1; $c = $a + $a++; printf("%d\n",$c); // int(3)
Output for 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
3
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/TTl5E on line 4
Process exited with code 255.
Output for 4.3.0 - 5.0.5
2