3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<? printf("Happy %s", 0x2d4b95a2);
Output for 5.4.0 - 7.2.0
Happy 759928226
Output for 4.3.0 - 5.3.29
<? printf("Happy %s", 0x2d4b95a2);