3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $a = new stdClass(); $a->{1} = 'Y'; $prop = 1; var_dump(function_exists('json_encode'));
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true)
Output for 5.0.0 - 5.1.6
bool(false)
Output for 4.3.3 - 4.4.9
Fatal error: Property name must be a string in /in/BLn3b on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.2

Process exited with code 139.