3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(JSON_ERROR_NONE);
Output for 5.3.0 - 7.1.0
int(0)
Output for 4.3.0 - 5.2.17
Notice: Use of undefined constant JSON_ERROR_NONE - assumed 'JSON_ERROR_NONE' in /in/jVlG6 on line 3 string(15) "JSON_ERROR_NONE"