3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(bin2hex(htmlspecialchars("A\xf4\x90\x80\x80B", ENT_NOQUOTES, 'UTF-8')));
Output for 5.3.4 - 7.2.0
string(0) ""
Output for 4.3.2 - 5.3.3
string(12) "41f490808042"
Output for 4.3.0 - 4.3.1

Process exited with code 139.