3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/[^a-zA-Z0-9.-\s]+/', '-?'));
Output for 5.4.41 - 5.4.45, 5.5.10 - 7.1.7
Warning: preg_match(): Compilation failed: invalid range in character class at offset 14 in /in/vBjJY on line 3 bool(false)
Output for 4.3.0 - 5.4.40, 5.5.0 - 5.5.9
int(1)