3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function check($value) { return (bool)preg_match('/^\p{Lu}{1}$/', $value); }; $test = 'ะค'; var_dump(check($test));
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(false)
Output for 4.3.11, 5.0.0 - 5.0.4
Warning: preg_match(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 2 in /in/jU4NX on line 5 bool(false)
Output for 4.3.0 - 4.3.10
Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 2 in /in/jU4NX on line 5 bool(false)