3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php echo preg_match("/[:digit:]/","九");
Output for 4.3.11 - 7.2.0
Warning: preg_match(): Compilation failed: POSIX named classes are supported only within a class at offset 0 in /in/G2Ggc on line 2
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: POSIX named classes are supported only within a class at offset 0 in /in/G2Ggc on line 2