3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/^\d+$/m', "123")); var_dump(preg_match('/^\d+$/m', "123\n")); var_dump(preg_match('/^\d+$/m', "\n123\n")); echo "---------\n"; var_dump(preg_match('/^\d+$/D', "123")); var_dump(preg_match('/^\d+$/D', "123\n")); var_dump(preg_match('/^\d+$/D', "\n123\n"));
based on chkLF
Output for 4.3.0 - 7.2.0
int(1) int(1) int(1) --------- int(1) int(0) int(0)