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run code in 150+ php & hhvm versions
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<?php preg_match_all('@\p{Han}@u','我mm艹',$m); print_r($m);
based on 20IOt
Output for 4.4.3 - 4.4.9, 5.1.3 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [0] => 我 [1] => 艹 ) )
Output for 4.4.0 - 4.4.2, 5.0.5 - 5.1.2
Warning: preg_match_all(): Compilation failed: unknown property name after \P or \p at offset 6 in /in/mor86 on line 2 Array ( )
Output for 4.3.11, 5.0.0 - 5.0.4
Warning: preg_match_all(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 1 in /in/mor86 on line 2 Array ( )
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 1 in /in/mor86 on line 2 Array ( )