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run code in 200+ php & hhvm versions
Bugs & Features
<?php preg_match_all('/[\p{InCJK_Radicals_Supplement}\p{InKangxi_Radicals}\p{InIdeographic_Description_Characters}\p{InCJK_Symbols_and_Punctuation}\p{InHiragana}\p{InKatakana}\p{InBopomofo}\p{InHangul_Compatibility_Jamo}\p{InKanbun}\p{InBopomofo_Extended}\p{InKatakana_Phonetic_Extensions}\p{InEnclosed_CJK_Letters_and_Months}\p{InCJK_Compatibility}\p{InCJK_Unified_Ideographs_Extension_A}\p{InYijing_Hexagram_Symbols}\p{InCJK_Unified_Ideographs}]/', 'test åäö', $matches); var_dump($matches);
based on Z8fUL
Output for 5.2.0 - 7.2.0
Warning: preg_match_all(): Compilation failed: unknown property name after \P or \p at offset 29 in /in/sXg1V on line 3 NULL
Output for 4.4.0 - 4.4.9, 5.0.5 - 5.1.6
Warning: preg_match_all(): Compilation failed: unknown property name after \P or \p at offset 29 in /in/sXg1V on line 3 array(0) { }
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 2 in /in/sXg1V on line 3 array(0) { }
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/sXg1V on line 3 array(0) { }