3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/^\s$/', "\n")); var_dump(preg_match('/^\s{2}$/', "\n\r")); var_dump(preg_match('/^\s$/', "\n\r"));
Output for 4.3.0 - 7.1.0
int(1) int(1) int(0)