3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $array = array( 12 => "152", 2 => "164", ); $output = json_encode($array); var_dump($output);
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(22) "{"12":"152","2":"164"}"
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/7vUcu on line 8
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/7vUcu on line 8
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/7vUcu on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/7vUcu on line 8