3v4l.org

run code in 200+ php & hhvm versions
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<?php var_dump(preg_match('/\bрус/', 'рус'));

Abusive script

This script was stopped while abusing our resources

Output for 4.3.0 - 5.6.38, hhvm-3.11.1, hhvm-3.18.4 - 3.22.0, 7.0.0 - 7.2.11
int(0)
Output for hhvm-3.10.1, hhvm-3.12.14 - 3.17.3

Process exited with code 137.