3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $string = 'u4F60u597Du4E16u754C'; $string = json_decode('"' . $string . '"'); $valid = mb_check_encoding($string, 'UTF-8'); echo ($valid) ? 'valid' : 'invalid';
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
valid
Output for 5.0.0 - 5.1.6
Fatal error: Call to undefined function json_decode() in /in/uEqmo on line 4
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: json_decode() in /in/uEqmo on line 4
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: json_decode() in /in/uEqmo on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: json_decode() in /in/uEqmo on line 4