3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(array_keys(json_decode(json_encode(array("foo\0bar" => 'xyz')), true)), json_encode(array("foo\0bar" => 'xyz')));
Output for 5.2.2 - 7.1.0
array(1) { [0]=> string(7) "foobar" } string(22) "{"foo\u0000bar":"xyz"}"
Output for 5.2.0 - 5.2.1
Warning: array_keys(): The first argument should be an array in /in/C5BKX on line 2 NULL string(17) "{"foobar":"xyz"}"
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/C5BKX on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/C5BKX on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/C5BKX on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/C5BKX on line 2