3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $regexEncoding = "windows-1251"; var_dump(mb_regex_encoding($regexEncoding));
Output for 4.3.4 - 4.4.9, 5.0.4 - 5.6.28, 7.0.0 - 7.1.0
Warning: mb_regex_encoding(): Unknown encoding "windows-1251" in /in/2uMh3 on line 4 bool(false)
Output for hhvm-3.12.0
Warning: Unknown encoding "windows-1251" in /in/2uMh3 on line 4 bool(false)
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.0.0 - 5.0.3
bool(true)
Output for 4.3.2 - 4.3.3
Fatal error: Call to undefined function: mb_regex_encoding() in /in/2uMh3 on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: mb_regex_encoding() in /in/2uMh3 on line 4