3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(json_decode('', 0)); var_dump(json_last_error());
based on SSetg
Output for 7.0.0 - 7.2.0
NULL int(4)
Output for 5.3.21 - 5.6.28
NULL int(0)