3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo json_encode(array('a'=>1,'b'=>2), JSON_PRETTY_PRINT);
Output for 5.4.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
{ "a": 1, "b": 2 }
Output for 5.3.0 - 5.3.29
Notice: Use of undefined constant JSON_PRETTY_PRINT - assumed 'JSON_PRETTY_PRINT' in /in/v2TmX on line 3 Warning: json_encode() expects parameter 2 to be long, string given in /in/v2TmX on line 3
Output for 5.2.0 - 5.2.17
Notice: Use of undefined constant JSON_PRETTY_PRINT - assumed 'JSON_PRETTY_PRINT' in /in/v2TmX on line 3 Warning: json_encode() expects exactly 1 parameter, 2 given in /in/v2TmX on line 3
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/v2TmX on line 3
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/v2TmX on line 3
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/v2TmX on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/v2TmX on line 3