3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php print json_encode(array( 'oe' => 'ö', 'Oe' => 'Ö', 'ae' => 'ä', 'Ae' => 'Ä', 'ue' => 'ü', 'Ue' => 'Ü', 'ss' => 'ß', ));
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
{"oe":"\u00f6","Oe":"\u00d6","ae":"\u00e4","Ae":"\u00c4","ue":"\u00fc","Ue":"\u00dc","ss":"\u00df"}
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_encode() in /in/b0Dek on line 2
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_encode() in /in/b0Dek on line 2
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_encode() in /in/b0Dek on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_encode() in /in/b0Dek on line 2