3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php echo (!preg_match("/^[a-zA-Z-]+$/i", 'A')) ? 'false' : 'true'; echo "\n"; echo (!preg_match("/^[a-zA-Z-]+$/i", '4567A')) ? 'false' : 'true';
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
true false