3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php mb_substitute_character('a'); var_dump(mb_convert_encoding(chr(190), 'UTF-8', 'UTF-8'));
Output for 5.4.0 - 5.6.28, 7.0.0 - 7.1.0
Warning: mb_substitute_character(): Unknown character. in /in/6ZASV on line 2 string(1) "?"
Output for hhvm-3.10.0 - 3.12.0
Warning: Unknown character. in /in/6ZASV on line 2 string(1) "?"
Output for 4.3.2 - 5.3.29
Warning: mb_substitute_character(): Unknown character. in /in/6ZASV on line 2 string(0) ""
Output for 4.3.0 - 4.3.1
Warning: mb_substitute_character() [http://www.php.net/function.mb-substitute-character]: Unknown character. in /in/6ZASV on line 2 string(0) ""