The authoritative source on what these character classes mean is Unicode Standard "Unicode Character Database", documented at https://www.unicode.org/reports/tr44/ (see chapter 5).(PHP 7, PHP 8)
IntlChar fornece acesso a um número de métodos utilitários que podem ser usados para acessar informações sobre caracteres Unicode.
Os métodos e constantes são aderentes de maneira muito próxima aos nomes e comportamentos utilizados pela biblioteca ICU subjacente.
$start,$end,$callback,$type = IntlChar::UNICODE_CHAR_NAME$codepoint, int $options = IntlChar::FOLD_CASE_DEFAULT): int|string|null$property, int $type = IntlChar::LONG_PROPERTY_NAME): string|falseIntlChar::UNICODE_VERSION
       string
      IntlChar::CODEPOINT_MIN
      int
     IntlChar::CODEPOINT_MAX
      int
     IntlChar::NO_NUMERIC_VALUE
      int
     Valor especial retornado por IntlChar::getNumericValue() quando nenhum valor numérico estiver difinido para um ponto de código.
IntlChar::PROPERTY_ALPHABETIC
      int
     IntlChar::PROPERTY_BINARY_START
      int
     IntlChar::PROPERTY_ASCII_HEX_DIGIT
      int
     IntlChar::PROPERTY_BIDI_CONTROL
      int
     IntlChar::PROPERTY_BIDI_MIRRORED
      int
     IntlChar::PROPERTY_DASH
      int
     IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT
      int
     IntlChar::PROPERTY_DEPRECATED
      int
     IntlChar::PROPERTY_DIACRITIC
      int
     IntlChar::PROPERTY_EXTENDER
      int
     IntlChar::PROPERTY_FULL_COMPOSITION_EXCLUSION
      int
     IntlChar::PROPERTY_GRAPHEME_BASE
      int
     IntlChar::PROPERTY_GRAPHEME_EXTEND
      int
     IntlChar::PROPERTY_GRAPHEME_LINK
      int
     IntlChar::PROPERTY_HEX_DIGIT
      int
     IntlChar::PROPERTY_HYPHEN
      int
     IntlChar::PROPERTY_ID_CONTINUE
      int
     IntlChar::PROPERTY_ID_START
      int
     IntlChar::PROPERTY_IDEOGRAPHIC
      int
     IntlChar::PROPERTY_IDS_BINARY_OPERATOR
      int
     IntlChar::PROPERTY_IDS_TRINARY_OPERATOR
      int
     IntlChar::PROPERTY_JOIN_CONTROL
      int
     IntlChar::PROPERTY_LOGICAL_ORDER_EXCEPTION
      int
     IntlChar::PROPERTY_LOWERCASE
      int
     IntlChar::PROPERTY_MATH
      int
     IntlChar::PROPERTY_NONCHARACTER_CODE_POINT
      int
     IntlChar::PROPERTY_QUOTATION_MARK
      int
     IntlChar::PROPERTY_RADICAL
      int
     IntlChar::PROPERTY_SOFT_DOTTED
      int
     IntlChar::PROPERTY_TERMINAL_PUNCTUATION
      int
     IntlChar::PROPERTY_UNIFIED_IDEOGRAPH
      int
     IntlChar::PROPERTY_UPPERCASE
      int
     IntlChar::PROPERTY_WHITE_SPACE
      int
     IntlChar::PROPERTY_XID_CONTINUE
      int
     IntlChar::PROPERTY_XID_START
      int
     IntlChar::PROPERTY_CASE_SENSITIVE
      int
     IntlChar::PROPERTY_S_TERM
      int
     IntlChar::PROPERTY_VARIATION_SELECTOR
      int
     IntlChar::PROPERTY_NFD_INERT
      int
     IntlChar::PROPERTY_NFKD_INERT
      int
     IntlChar::PROPERTY_NFC_INERT
      int
     IntlChar::PROPERTY_NFKC_INERT
      int
     IntlChar::PROPERTY_SEGMENT_STARTER
      int
     IntlChar::PROPERTY_PATTERN_SYNTAX
      int
     IntlChar::PROPERTY_PATTERN_WHITE_SPACE
      int
     IntlChar::PROPERTY_POSIX_ALNUM
      int
     IntlChar::PROPERTY_POSIX_BLANK
      int
     IntlChar::PROPERTY_POSIX_GRAPH
      int
     IntlChar::PROPERTY_POSIX_PRINT
      int
     IntlChar::PROPERTY_POSIX_XDIGIT
      int
     IntlChar::PROPERTY_CASED
      int
     IntlChar::PROPERTY_CASE_IGNORABLE
      int
     IntlChar::PROPERTY_CHANGES_WHEN_LOWERCASED
      int
     IntlChar::PROPERTY_CHANGES_WHEN_UPPERCASED
      int
     IntlChar::PROPERTY_CHANGES_WHEN_TITLECASED
      int
     IntlChar::PROPERTY_CHANGES_WHEN_CASEFOLDED
      int
     IntlChar::PROPERTY_CHANGES_WHEN_CASEMAPPED
      int
     IntlChar::PROPERTY_CHANGES_WHEN_NFKC_CASEFOLDED
      int
     IntlChar::PROPERTY_BINARY_LIMIT
      int
     IntlChar::PROPERTY_BIDI_CLASS
      int
     IntlChar::PROPERTY_INT_START
      int
     IntlChar::PROPERTY_BLOCK
      int
     IntlChar::PROPERTY_CANONICAL_COMBINING_CLASS
      int
     IntlChar::PROPERTY_DECOMPOSITION_TYPE
      int
     IntlChar::PROPERTY_EAST_ASIAN_WIDTH
      int
     IntlChar::PROPERTY_GENERAL_CATEGORY
      int
     IntlChar::PROPERTY_JOINING_GROUP
      int
     IntlChar::PROPERTY_JOINING_TYPE
      int
     IntlChar::PROPERTY_LINE_BREAK
      int
     IntlChar::PROPERTY_NUMERIC_TYPE
      int
     IntlChar::PROPERTY_SCRIPT
      int
     IntlChar::PROPERTY_HANGUL_SYLLABLE_TYPE
      int
     IntlChar::PROPERTY_NFD_QUICK_CHECK
      int
     IntlChar::PROPERTY_NFKD_QUICK_CHECK
      int
     IntlChar::PROPERTY_NFC_QUICK_CHECK
      int
     IntlChar::PROPERTY_NFKC_QUICK_CHECK
      int
     IntlChar::PROPERTY_LEAD_CANONICAL_COMBINING_CLASS
      int
     IntlChar::PROPERTY_TRAIL_CANONICAL_COMBINING_CLASS
      int
     IntlChar::PROPERTY_GRAPHEME_CLUSTER_BREAK
      int
     IntlChar::PROPERTY_SENTENCE_BREAK
      int
     IntlChar::PROPERTY_WORD_BREAK
      int
     IntlChar::PROPERTY_BIDI_PAIRED_BRACKET_TYPE
      int
     IntlChar::PROPERTY_INT_LIMIT
      int
     IntlChar::PROPERTY_GENERAL_CATEGORY_MASK
      int
     IntlChar::PROPERTY_MASK_START
      int
     IntlChar::PROPERTY_MASK_LIMIT
      int
     IntlChar::PROPERTY_NUMERIC_VALUE
      int
     IntlChar::PROPERTY_DOUBLE_START
      int
     IntlChar::PROPERTY_DOUBLE_LIMIT
      int
     IntlChar::PROPERTY_AGE
      int
     IntlChar::PROPERTY_STRING_START
      int
     IntlChar::PROPERTY_BIDI_MIRRORING_GLYPH
      int
     IntlChar::PROPERTY_CASE_FOLDING
      int
     IntlChar::PROPERTY_ISO_COMMENT
      int
     IntlChar::PROPERTY_LOWERCASE_MAPPING
      int
     IntlChar::PROPERTY_NAME
      int
     IntlChar::PROPERTY_SIMPLE_CASE_FOLDING
      int
     IntlChar::PROPERTY_SIMPLE_LOWERCASE_MAPPING
      int
     IntlChar::PROPERTY_SIMPLE_TITLECASE_MAPPING
      int
     IntlChar::PROPERTY_SIMPLE_UPPERCASE_MAPPING
      int
     IntlChar::PROPERTY_TITLECASE_MAPPING
      int
     IntlChar::PROPERTY_UNICODE_1_NAME
      int
     IntlChar::PROPERTY_UPPERCASE_MAPPING
      int
     IntlChar::PROPERTY_BIDI_PAIRED_BRACKET
      int
     IntlChar::PROPERTY_STRING_LIMIT
      int
     IntlChar::PROPERTY_SCRIPT_EXTENSIONS
      int
     IntlChar::PROPERTY_OTHER_PROPERTY_START
      int
     IntlChar::PROPERTY_OTHER_PROPERTY_LIMIT
      int
     IntlChar::PROPERTY_INVALID_CODE
      int
     IntlChar::CHAR_CATEGORY_UNASSIGNED
      int
     IntlChar::CHAR_CATEGORY_GENERAL_OTHER_TYPES
      int
     IntlChar::CHAR_CATEGORY_UPPERCASE_LETTER
      int
     IntlChar::CHAR_CATEGORY_LOWERCASE_LETTER
      int
     IntlChar::CHAR_CATEGORY_TITLECASE_LETTER
      int
     IntlChar::CHAR_CATEGORY_MODIFIER_LETTER
      int
     IntlChar::CHAR_CATEGORY_OTHER_LETTER
      int
     IntlChar::CHAR_CATEGORY_NON_SPACING_MARK
      int
     IntlChar::CHAR_CATEGORY_ENCLOSING_MARK
      int
     IntlChar::CHAR_CATEGORY_COMBINING_SPACING_MARK
      int
     IntlChar::CHAR_CATEGORY_DECIMAL_DIGIT_NUMBER
      int
     IntlChar::CHAR_CATEGORY_LETTER_NUMBER
      int
     IntlChar::CHAR_CATEGORY_OTHER_NUMBER
      int
     IntlChar::CHAR_CATEGORY_SPACE_SEPARATOR
      int
     IntlChar::CHAR_CATEGORY_LINE_SEPARATOR
      int
     IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR
      int
     IntlChar::CHAR_CATEGORY_CONTROL_CHAR
      int
     IntlChar::CHAR_CATEGORY_FORMAT_CHAR
      int
     IntlChar::CHAR_CATEGORY_PRIVATE_USE_CHAR
      int
     IntlChar::CHAR_CATEGORY_SURROGATE
      int
     IntlChar::CHAR_CATEGORY_DASH_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_START_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_END_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_CONNECTOR_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_OTHER_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_MATH_SYMBOL
      int
     IntlChar::CHAR_CATEGORY_CURRENCY_SYMBOL
      int
     IntlChar::CHAR_CATEGORY_MODIFIER_SYMBOL
      int
     IntlChar::CHAR_CATEGORY_OTHER_SYMBOL
      int
     IntlChar::CHAR_CATEGORY_INITIAL_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_FINAL_PUNCTUATION
      int
     IntlChar::CHAR_CATEGORY_CHAR_CATEGORY_COUNT
      int
     IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT
      int
     IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT
      int
     IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER
      int
     IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_SEPARATOR
      int
     IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_TERMINATOR
      int
     IntlChar::CHAR_DIRECTION_ARABIC_NUMBER
      int
     IntlChar::CHAR_DIRECTION_COMMON_NUMBER_SEPARATOR
      int
     IntlChar::CHAR_DIRECTION_BLOCK_SEPARATOR
      int
     IntlChar::CHAR_DIRECTION_SEGMENT_SEPARATOR
      int
     IntlChar::CHAR_DIRECTION_WHITE_SPACE_NEUTRAL
      int
     IntlChar::CHAR_DIRECTION_OTHER_NEUTRAL
      int
     IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_EMBEDDING
      int
     IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_OVERRIDE
      int
     IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ARABIC
      int
     IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_EMBEDDING
      int
     IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_OVERRIDE
      int
     IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_FORMAT
      int
     IntlChar::CHAR_DIRECTION_DIR_NON_SPACING_MARK
      int
     IntlChar::CHAR_DIRECTION_BOUNDARY_NEUTRAL
      int
     IntlChar::CHAR_DIRECTION_FIRST_STRONG_ISOLATE
      int
     IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_ISOLATE
      int
     IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ISOLATE
      int
     IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_ISOLATE
      int
     IntlChar::CHAR_DIRECTION_CHAR_DIRECTION_COUNT
      int
     IntlChar::BLOCK_CODE_NO_BLOCK
      int
     IntlChar::BLOCK_CODE_BASIC_LATIN
      int
     IntlChar::BLOCK_CODE_LATIN_1_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_B
      int
     IntlChar::BLOCK_CODE_IPA_EXTENSIONS
      int
     IntlChar::BLOCK_CODE_SPACING_MODIFIER_LETTERS
      int
     IntlChar::BLOCK_CODE_COMBINING_DIACRITICAL_MARKS
      int
     IntlChar::BLOCK_CODE_GREEK
      int
     IntlChar::BLOCK_CODE_CYRILLIC
      int
     IntlChar::BLOCK_CODE_ARMENIAN
      int
     IntlChar::BLOCK_CODE_HEBREW
      int
     IntlChar::BLOCK_CODE_ARABIC
      int
     IntlChar::BLOCK_CODE_SYRIAC
      int
     IntlChar::BLOCK_CODE_THAANA
      int
     IntlChar::BLOCK_CODE_DEVANAGARI
      int
     IntlChar::BLOCK_CODE_BENGALI
      int
     IntlChar::BLOCK_CODE_GURMUKHI
      int
     IntlChar::BLOCK_CODE_GUJARATI
      int
     IntlChar::BLOCK_CODE_ORIYA
      int
     IntlChar::BLOCK_CODE_TAMIL
      int
     IntlChar::BLOCK_CODE_TELUGU
      int
     IntlChar::BLOCK_CODE_KANNADA
      int
     IntlChar::BLOCK_CODE_MALAYALAM
      int
     IntlChar::BLOCK_CODE_SINHALA
      int
     IntlChar::BLOCK_CODE_THAI
      int
     IntlChar::BLOCK_CODE_LAO
      int
     IntlChar::BLOCK_CODE_TIBETAN
      int
     IntlChar::BLOCK_CODE_MYANMAR
      int
     IntlChar::BLOCK_CODE_GEORGIAN
      int
     IntlChar::BLOCK_CODE_HANGUL_JAMO
      int
     IntlChar::BLOCK_CODE_ETHIOPIC
      int
     IntlChar::BLOCK_CODE_CHEROKEE
      int
     IntlChar::BLOCK_CODE_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS
      int
     IntlChar::BLOCK_CODE_OGHAM
      int
     IntlChar::BLOCK_CODE_RUNIC
      int
     IntlChar::BLOCK_CODE_KHMER
      int
     IntlChar::BLOCK_CODE_MONGOLIAN
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_ADDITIONAL
      int
     IntlChar::BLOCK_CODE_GREEK_EXTENDED
      int
     IntlChar::BLOCK_CODE_GENERAL_PUNCTUATION
      int
     IntlChar::BLOCK_CODE_SUPERSCRIPTS_AND_SUBSCRIPTS
      int
     IntlChar::BLOCK_CODE_CURRENCY_SYMBOLS
      int
     IntlChar::BLOCK_CODE_COMBINING_MARKS_FOR_SYMBOLS
      int
     IntlChar::BLOCK_CODE_LETTERLIKE_SYMBOLS
      int
     IntlChar::BLOCK_CODE_NUMBER_FORMS
      int
     IntlChar::BLOCK_CODE_ARROWS
      int
     IntlChar::BLOCK_CODE_MATHEMATICAL_OPERATORS
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_TECHNICAL
      int
     IntlChar::BLOCK_CODE_CONTROL_PICTURES
      int
     IntlChar::BLOCK_CODE_OPTICAL_CHARACTER_RECOGNITION
      int
     IntlChar::BLOCK_CODE_ENCLOSED_ALPHANUMERICS
      int
     IntlChar::BLOCK_CODE_BOX_DRAWING
      int
     IntlChar::BLOCK_CODE_BLOCK_ELEMENTS
      int
     IntlChar::BLOCK_CODE_GEOMETRIC_SHAPES
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS
      int
     IntlChar::BLOCK_CODE_DINGBATS
      int
     IntlChar::BLOCK_CODE_BRAILLE_PATTERNS
      int
     IntlChar::BLOCK_CODE_CJK_RADICALS_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_KANGXI_RADICALS
      int
     IntlChar::BLOCK_CODE_IDEOGRAPHIC_DESCRIPTION_CHARACTERS
      int
     IntlChar::BLOCK_CODE_CJK_SYMBOLS_AND_PUNCTUATION
      int
     IntlChar::BLOCK_CODE_HIRAGANA
      int
     IntlChar::BLOCK_CODE_KATAKANA
      int
     IntlChar::BLOCK_CODE_BOPOMOFO
      int
     IntlChar::BLOCK_CODE_HANGUL_COMPATIBILITY_JAMO
      int
     IntlChar::BLOCK_CODE_KANBUN
      int
     IntlChar::BLOCK_CODE_BOPOMOFO_EXTENDED
      int
     IntlChar::BLOCK_CODE_ENCLOSED_CJK_LETTERS_AND_MONTHS
      int
     IntlChar::BLOCK_CODE_CJK_COMPATIBILITY
      int
     IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
      int
     IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS
      int
     IntlChar::BLOCK_CODE_YI_SYLLABLES
      int
     IntlChar::BLOCK_CODE_YI_RADICALS
      int
     IntlChar::BLOCK_CODE_HANGUL_SYLLABLES
      int
     IntlChar::BLOCK_CODE_HIGH_SURROGATES
      int
     IntlChar::BLOCK_CODE_HIGH_PRIVATE_USE_SURROGATES
      int
     IntlChar::BLOCK_CODE_LOW_SURROGATES
      int
     IntlChar::BLOCK_CODE_PRIVATE_USE_AREA
      int
     IntlChar::BLOCK_CODE_PRIVATE_USE
      int
     IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_IDEOGRAPHS
      int
     IntlChar::BLOCK_CODE_ALPHABETIC_PRESENTATION_FORMS
      int
     IntlChar::BLOCK_CODE_ARABIC_PRESENTATION_FORMS_A
      int
     IntlChar::BLOCK_CODE_COMBINING_HALF_MARKS
      int
     IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_FORMS
      int
     IntlChar::BLOCK_CODE_SMALL_FORM_VARIANTS
      int
     IntlChar::BLOCK_CODE_ARABIC_PRESENTATION_FORMS_B
      int
     IntlChar::BLOCK_CODE_SPECIALS
      int
     IntlChar::BLOCK_CODE_HALFWIDTH_AND_FULLWIDTH_FORMS
      int
     IntlChar::BLOCK_CODE_OLD_ITALIC
      int
     IntlChar::BLOCK_CODE_GOTHIC
      int
     IntlChar::BLOCK_CODE_DESERET
      int
     IntlChar::BLOCK_CODE_BYZANTINE_MUSICAL_SYMBOLS
      int
     IntlChar::BLOCK_CODE_MUSICAL_SYMBOLS
      int
     IntlChar::BLOCK_CODE_MATHEMATICAL_ALPHANUMERIC_SYMBOLS
      int
     IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
      int
     IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_CYRILLIC_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_CYRILLIC_SUPPLEMENTARY
      int
     IntlChar::BLOCK_CODE_TAGALOG
      int
     IntlChar::BLOCK_CODE_HANUNOO
      int
     IntlChar::BLOCK_CODE_BUHID
      int
     IntlChar::BLOCK_CODE_TAGBANWA
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTAL_ARROWS_A
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTAL_ARROWS_B
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTAL_MATHEMATICAL_OPERATORS
      int
     IntlChar::BLOCK_CODE_KATAKANA_PHONETIC_EXTENSIONS
      int
     IntlChar::BLOCK_CODE_VARIATION_SELECTORS
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTARY_PRIVATE_USE_AREA_A
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTARY_PRIVATE_USE_AREA_B
      int
     IntlChar::BLOCK_CODE_LIMBU
      int
     IntlChar::BLOCK_CODE_TAI_LE
      int
     IntlChar::BLOCK_CODE_KHMER_SYMBOLS
      int
     IntlChar::BLOCK_CODE_PHONETIC_EXTENSIONS
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS_AND_ARROWS
      int
     IntlChar::BLOCK_CODE_YIJING_HEXAGRAM_SYMBOLS
      int
     IntlChar::BLOCK_CODE_LINEAR_B_SYLLABARY
      int
     IntlChar::BLOCK_CODE_LINEAR_B_IDEOGRAMS
      int
     IntlChar::BLOCK_CODE_AEGEAN_NUMBERS
      int
     IntlChar::BLOCK_CODE_UGARITIC
      int
     IntlChar::BLOCK_CODE_SHAVIAN
      int
     IntlChar::BLOCK_CODE_OSMANYA
      int
     IntlChar::BLOCK_CODE_CYPRIOT_SYLLABARY
      int
     IntlChar::BLOCK_CODE_TAI_XUAN_JING_SYMBOLS
      int
     IntlChar::BLOCK_CODE_VARIATION_SELECTORS_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_ANCIENT_GREEK_MUSICAL_NOTATION
      int
     IntlChar::BLOCK_CODE_ANCIENT_GREEK_NUMBERS
      int
     IntlChar::BLOCK_CODE_ARABIC_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_BUGINESE
      int
     IntlChar::BLOCK_CODE_CJK_STROKES
      int
     IntlChar::BLOCK_CODE_COMBINING_DIACRITICAL_MARKS_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_COPTIC
      int
     IntlChar::BLOCK_CODE_ETHIOPIC_EXTENDED
      int
     IntlChar::BLOCK_CODE_ETHIOPIC_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_GEORGIAN_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_GLAGOLITIC
      int
     IntlChar::BLOCK_CODE_KHAROSHTHI
      int
     IntlChar::BLOCK_CODE_MODIFIER_TONE_LETTERS
      int
     IntlChar::BLOCK_CODE_NEW_TAI_LUE
      int
     IntlChar::BLOCK_CODE_OLD_PERSIAN
      int
     IntlChar::BLOCK_CODE_PHONETIC_EXTENSIONS_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTAL_PUNCTUATION
      int
     IntlChar::BLOCK_CODE_SYLOTI_NAGRI
      int
     IntlChar::BLOCK_CODE_TIFINAGH
      int
     IntlChar::BLOCK_CODE_VERTICAL_FORMS
      int
     IntlChar::BLOCK_CODE_NKO
      int
     IntlChar::BLOCK_CODE_BALINESE
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_C
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_D
      int
     IntlChar::BLOCK_CODE_PHAGS_PA
      int
     IntlChar::BLOCK_CODE_PHOENICIAN
      int
     IntlChar::BLOCK_CODE_CUNEIFORM
      int
     IntlChar::BLOCK_CODE_CUNEIFORM_NUMBERS_AND_PUNCTUATION
      int
     IntlChar::BLOCK_CODE_COUNTING_ROD_NUMERALS
      int
     IntlChar::BLOCK_CODE_SUNDANESE
      int
     IntlChar::BLOCK_CODE_LEPCHA
      int
     IntlChar::BLOCK_CODE_OL_CHIKI
      int
     IntlChar::BLOCK_CODE_CYRILLIC_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_VAI
      int
     IntlChar::BLOCK_CODE_CYRILLIC_EXTENDED_B
      int
     IntlChar::BLOCK_CODE_SAURASHTRA
      int
     IntlChar::BLOCK_CODE_KAYAH_LI
      int
     IntlChar::BLOCK_CODE_REJANG
      int
     IntlChar::BLOCK_CODE_CHAM
      int
     IntlChar::BLOCK_CODE_ANCIENT_SYMBOLS
      int
     IntlChar::BLOCK_CODE_PHAISTOS_DISC
      int
     IntlChar::BLOCK_CODE_LYCIAN
      int
     IntlChar::BLOCK_CODE_CARIAN
      int
     IntlChar::BLOCK_CODE_LYDIAN
      int
     IntlChar::BLOCK_CODE_MAHJONG_TILES
      int
     IntlChar::BLOCK_CODE_DOMINO_TILES
      int
     IntlChar::BLOCK_CODE_SAMARITAN
      int
     IntlChar::BLOCK_CODE_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED
      int
     IntlChar::BLOCK_CODE_TAI_THAM
      int
     IntlChar::BLOCK_CODE_VEDIC_EXTENSIONS
      int
     IntlChar::BLOCK_CODE_LISU
      int
     IntlChar::BLOCK_CODE_BAMUM
      int
     IntlChar::BLOCK_CODE_COMMON_INDIC_NUMBER_FORMS
      int
     IntlChar::BLOCK_CODE_DEVANAGARI_EXTENDED
      int
     IntlChar::BLOCK_CODE_HANGUL_JAMO_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_JAVANESE
      int
     IntlChar::BLOCK_CODE_MYANMAR_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_TAI_VIET
      int
     IntlChar::BLOCK_CODE_MEETEI_MAYEK
      int
     IntlChar::BLOCK_CODE_HANGUL_JAMO_EXTENDED_B
      int
     IntlChar::BLOCK_CODE_IMPERIAL_ARAMAIC
      int
     IntlChar::BLOCK_CODE_OLD_SOUTH_ARABIAN
      int
     IntlChar::BLOCK_CODE_AVESTAN
      int
     IntlChar::BLOCK_CODE_INSCRIPTIONAL_PARTHIAN
      int
     IntlChar::BLOCK_CODE_INSCRIPTIONAL_PAHLAVI
      int
     IntlChar::BLOCK_CODE_OLD_TURKIC
      int
     IntlChar::BLOCK_CODE_RUMI_NUMERAL_SYMBOLS
      int
     IntlChar::BLOCK_CODE_KAITHI
      int
     IntlChar::BLOCK_CODE_EGYPTIAN_HIEROGLYPHS
      int
     IntlChar::BLOCK_CODE_ENCLOSED_ALPHANUMERIC_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_ENCLOSED_IDEOGRAPHIC_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_C
      int
     IntlChar::BLOCK_CODE_MANDAIC
      int
     IntlChar::BLOCK_CODE_BATAK
      int
     IntlChar::BLOCK_CODE_ETHIOPIC_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_BRAHMI
      int
     IntlChar::BLOCK_CODE_BAMUM_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_KANA_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_PLAYING_CARDS
      int
     IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS
      int
     IntlChar::BLOCK_CODE_EMOTICONS
      int
     IntlChar::BLOCK_CODE_TRANSPORT_AND_MAP_SYMBOLS
      int
     IntlChar::BLOCK_CODE_ALCHEMICAL_SYMBOLS
      int
     IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_D
      int
     IntlChar::BLOCK_CODE_ARABIC_EXTENDED_A
      int
     IntlChar::BLOCK_CODE_ARABIC_MATHEMATICAL_ALPHABETIC_SYMBOLS
      int
     IntlChar::BLOCK_CODE_CHAKMA
      int
     IntlChar::BLOCK_CODE_MEETEI_MAYEK_EXTENSIONS
      int
     IntlChar::BLOCK_CODE_MEROITIC_CURSIVE
      int
     IntlChar::BLOCK_CODE_MEROITIC_HIEROGLYPHS
      int
     IntlChar::BLOCK_CODE_MIAO
      int
     IntlChar::BLOCK_CODE_SHARADA
      int
     IntlChar::BLOCK_CODE_SORA_SOMPENG
      int
     IntlChar::BLOCK_CODE_SUNDANESE_SUPPLEMENT
      int
     IntlChar::BLOCK_CODE_TAKRI
      int
     IntlChar::BLOCK_CODE_BASSA_VAH
      int
     IntlChar::BLOCK_CODE_CAUCASIAN_ALBANIAN
      int
     IntlChar::BLOCK_CODE_COPTIC_EPACT_NUMBERS
      int
     IntlChar::BLOCK_CODE_COMBINING_DIACRITICAL_MARKS_EXTENDED
      int
     IntlChar::BLOCK_CODE_DUPLOYAN
      int
     IntlChar::BLOCK_CODE_ELBASAN
      int
     IntlChar::BLOCK_CODE_GEOMETRIC_SHAPES_EXTENDED
      int
     IntlChar::BLOCK_CODE_GRANTHA
      int
     IntlChar::BLOCK_CODE_KHOJKI
      int
     IntlChar::BLOCK_CODE_KHUDAWADI
      int
     IntlChar::BLOCK_CODE_LATIN_EXTENDED_E
      int
     IntlChar::BLOCK_CODE_LINEAR_A
      int
     IntlChar::BLOCK_CODE_MAHAJANI
      int
     IntlChar::BLOCK_CODE_MANICHAEAN
      int
     IntlChar::BLOCK_CODE_MENDE_KIKAKUI
      int
     IntlChar::BLOCK_CODE_MODI
      int
     IntlChar::BLOCK_CODE_MRO
      int
     IntlChar::BLOCK_CODE_MYANMAR_EXTENDED_B
      int
     IntlChar::BLOCK_CODE_NABATAEAN
      int
     IntlChar::BLOCK_CODE_OLD_NORTH_ARABIAN
      int
     IntlChar::BLOCK_CODE_OLD_PERMIC
      int
     IntlChar::BLOCK_CODE_ORNAMENTAL_DINGBATS
      int
     IntlChar::BLOCK_CODE_PAHAWH_HMONG
      int
     IntlChar::BLOCK_CODE_PALMYRENE
      int
     IntlChar::BLOCK_CODE_PAU_CIN_HAU
      int
     IntlChar::BLOCK_CODE_PSALTER_PAHLAVI
      int
     IntlChar::BLOCK_CODE_SHORTHAND_FORMAT_CONTROLS
      int
     IntlChar::BLOCK_CODE_SIDDHAM
      int
     IntlChar::BLOCK_CODE_SINHALA_ARCHAIC_NUMBERS
      int
     IntlChar::BLOCK_CODE_SUPPLEMENTAL_ARROWS_C
      int
     IntlChar::BLOCK_CODE_TIRHUTA
      int
     IntlChar::BLOCK_CODE_WARANG_CITI
      int
     IntlChar::BLOCK_CODE_COUNT
      int
     IntlChar::BLOCK_CODE_INVALID_CODE
      int
     IntlChar::BPT_NONE
      int
     IntlChar::BPT_OPEN
      int
     IntlChar::BPT_CLOSE
      int
     IntlChar::BPT_COUNT
      int
     IntlChar::EA_NEUTRAL
      int
     IntlChar::EA_AMBIGUOUS
      int
     IntlChar::EA_HALFWIDTH
      int
     IntlChar::EA_FULLWIDTH
      int
     IntlChar::EA_NARROW
      int
     IntlChar::EA_WIDE
      int
     IntlChar::EA_COUNT
      int
     IntlChar::UNICODE_CHAR_NAME
      int
     IntlChar::UNICODE_10_CHAR_NAME
      int
     IntlChar::EXTENDED_CHAR_NAME
      int
     IntlChar::CHAR_NAME_ALIAS
      int
     IntlChar::CHAR_NAME_CHOICE_COUNT
      int
     IntlChar::SHORT_PROPERTY_NAME
      int
     IntlChar::LONG_PROPERTY_NAME
      int
     IntlChar::PROPERTY_NAME_CHOICE_COUNT
      int
     IntlChar::DT_NONE
      int
     IntlChar::DT_CANONICAL
      int
     IntlChar::DT_COMPAT
      int
     IntlChar::DT_CIRCLE
      int
     IntlChar::DT_FINAL
      int
     IntlChar::DT_FONT
      int
     IntlChar::DT_FRACTION
      int
     IntlChar::DT_INITIAL
      int
     IntlChar::DT_ISOLATED
      int
     IntlChar::DT_MEDIAL
      int
     IntlChar::DT_NARROW
      int
     IntlChar::DT_NOBREAK
      int
     IntlChar::DT_SMALL
      int
     IntlChar::DT_SQUARE
      int
     IntlChar::DT_SUB
      int
     IntlChar::DT_SUPER
      int
     IntlChar::DT_VERTICAL
      int
     IntlChar::DT_WIDE
      int
     IntlChar::DT_COUNT
      int
     IntlChar::JT_NON_JOINING
      int
     IntlChar::JT_JOIN_CAUSING
      int
     IntlChar::JT_DUAL_JOINING
      int
     IntlChar::JT_LEFT_JOINING
      int
     IntlChar::JT_RIGHT_JOINING
      int
     IntlChar::JT_TRANSPARENT
      int
     IntlChar::JT_COUNT
      int
     IntlChar::JG_NO_JOINING_GROUP
      int
     IntlChar::JG_AIN
      int
     IntlChar::JG_ALAPH
      int
     IntlChar::JG_ALEF
      int
     IntlChar::JG_BEH
      int
     IntlChar::JG_BETH
      int
     IntlChar::JG_DAL
      int
     IntlChar::JG_DALATH_RISH
      int
     IntlChar::JG_E
      int
     IntlChar::JG_FEH
      int
     IntlChar::JG_FINAL_SEMKATH
      int
     IntlChar::JG_GAF
      int
     IntlChar::JG_GAMAL
      int
     IntlChar::JG_HAH
      int
     IntlChar::JG_TEH_MARBUTA_GOAL
      int
     IntlChar::JG_HAMZA_ON_HEH_GOAL
      int
     IntlChar::JG_HE
      int
     IntlChar::JG_HEH
      int
     IntlChar::JG_HEH_GOAL
      int
     IntlChar::JG_HETH
      int
     IntlChar::JG_KAF
      int
     IntlChar::JG_KAPH
      int
     IntlChar::JG_KNOTTED_HEH
      int
     IntlChar::JG_LAM
      int
     IntlChar::JG_LAMADH
      int
     IntlChar::JG_MEEM
      int
     IntlChar::JG_MIM
      int
     IntlChar::JG_NOON
      int
     IntlChar::JG_NUN
      int
     IntlChar::JG_PE
      int
     IntlChar::JG_QAF
      int
     IntlChar::JG_QAPH
      int
     IntlChar::JG_REH
      int
     IntlChar::JG_REVERSED_PE
      int
     IntlChar::JG_SAD
      int
     IntlChar::JG_SADHE
      int
     IntlChar::JG_SEEN
      int
     IntlChar::JG_SEMKATH
      int
     IntlChar::JG_SHIN
      int
     IntlChar::JG_SWASH_KAF
      int
     IntlChar::JG_SYRIAC_WAW
      int
     IntlChar::JG_TAH
      int
     IntlChar::JG_TAW
      int
     IntlChar::JG_TEH_MARBUTA
      int
     IntlChar::JG_TETH
      int
     IntlChar::JG_WAW
      int
     IntlChar::JG_YEH
      int
     IntlChar::JG_YEH_BARREE
      int
     IntlChar::JG_YEH_WITH_TAIL
      int
     IntlChar::JG_YUDH
      int
     IntlChar::JG_YUDH_HE
      int
     IntlChar::JG_ZAIN
      int
     IntlChar::JG_FE
      int
     IntlChar::JG_KHAPH
      int
     IntlChar::JG_ZHAIN
      int
     IntlChar::JG_BURUSHASKI_YEH_BARREE
      int
     IntlChar::JG_FARSI_YEH
      int
     IntlChar::JG_NYA
      int
     IntlChar::JG_ROHINGYA_YEH
      int
     IntlChar::JG_MANICHAEAN_ALEPH
      int
     IntlChar::JG_MANICHAEAN_AYIN
      int
     IntlChar::JG_MANICHAEAN_BETH
      int
     IntlChar::JG_MANICHAEAN_DALETH
      int
     IntlChar::JG_MANICHAEAN_DHAMEDH
      int
     IntlChar::JG_MANICHAEAN_FIVE
      int
     IntlChar::JG_MANICHAEAN_GIMEL
      int
     IntlChar::JG_MANICHAEAN_HETH
      int
     IntlChar::JG_MANICHAEAN_HUNDRED
      int
     IntlChar::JG_MANICHAEAN_KAPH
      int
     IntlChar::JG_MANICHAEAN_LAMEDH
      int
     IntlChar::JG_MANICHAEAN_MEM
      int
     IntlChar::JG_MANICHAEAN_NUN
      int
     IntlChar::JG_MANICHAEAN_ONE
      int
     IntlChar::JG_MANICHAEAN_PE
      int
     IntlChar::JG_MANICHAEAN_QOPH
      int
     IntlChar::JG_MANICHAEAN_RESH
      int
     IntlChar::JG_MANICHAEAN_SADHE
      int
     IntlChar::JG_MANICHAEAN_SAMEKH
      int
     IntlChar::JG_MANICHAEAN_TAW
      int
     IntlChar::JG_MANICHAEAN_TEN
      int
     IntlChar::JG_MANICHAEAN_TETH
      int
     IntlChar::JG_MANICHAEAN_THAMEDH
      int
     IntlChar::JG_MANICHAEAN_TWENTY
      int
     IntlChar::JG_MANICHAEAN_WAW
      int
     IntlChar::JG_MANICHAEAN_YODH
      int
     IntlChar::JG_MANICHAEAN_ZAYIN
      int
     IntlChar::JG_STRAIGHT_WAW
      int
     IntlChar::JG_COUNT
      int
     IntlChar::GCB_OTHER
      int
     IntlChar::GCB_CONTROL
      int
     IntlChar::GCB_CR
      int
     IntlChar::GCB_EXTEND
      int
     IntlChar::GCB_L
      int
     IntlChar::GCB_LF
      int
     IntlChar::GCB_LV
      int
     IntlChar::GCB_LVT
      int
     IntlChar::GCB_T
      int
     IntlChar::GCB_V
      int
     IntlChar::GCB_SPACING_MARK
      int
     IntlChar::GCB_PREPEND
      int
     IntlChar::GCB_REGIONAL_INDICATOR
      int
     IntlChar::GCB_COUNT
      int
     IntlChar::WB_OTHER
      int
     IntlChar::WB_ALETTER
      int
     IntlChar::WB_FORMAT
      int
     IntlChar::WB_KATAKANA
      int
     IntlChar::WB_MIDLETTER
      int
     IntlChar::WB_MIDNUM
      int
     IntlChar::WB_NUMERIC
      int
     IntlChar::WB_EXTENDNUMLET
      int
     IntlChar::WB_CR
      int
     IntlChar::WB_EXTEND
      int
     IntlChar::WB_LF
      int
     IntlChar::WB_MIDNUMLET
      int
     IntlChar::WB_NEWLINE
      int
     IntlChar::WB_REGIONAL_INDICATOR
      int
     IntlChar::WB_HEBREW_LETTER
      int
     IntlChar::WB_SINGLE_QUOTE
      int
     IntlChar::WB_DOUBLE_QUOTE
      int
     IntlChar::WB_COUNT
      int
     IntlChar::SB_OTHER
      int
     IntlChar::SB_ATERM
      int
     IntlChar::SB_CLOSE
      int
     IntlChar::SB_FORMAT
      int
     IntlChar::SB_LOWER
      int
     IntlChar::SB_NUMERIC
      int
     IntlChar::SB_OLETTER
      int
     IntlChar::SB_SEP
      int
     IntlChar::SB_SP
      int
     IntlChar::SB_STERM
      int
     IntlChar::SB_UPPER
      int
     IntlChar::SB_CR
      int
     IntlChar::SB_EXTEND
      int
     IntlChar::SB_LF
      int
     IntlChar::SB_SCONTINUE
      int
     IntlChar::SB_COUNT
      int
     IntlChar::LB_UNKNOWN
      int
     IntlChar::LB_AMBIGUOUS
      int
     IntlChar::LB_ALPHABETIC
      int
     IntlChar::LB_BREAK_BOTH
      int
     IntlChar::LB_BREAK_AFTER
      int
     IntlChar::LB_BREAK_BEFORE
      int
     IntlChar::LB_MANDATORY_BREAK
      int
     IntlChar::LB_CONTINGENT_BREAK
      int
     IntlChar::LB_CLOSE_PUNCTUATION
      int
     IntlChar::LB_COMBINING_MARK
      int
     IntlChar::LB_CARRIAGE_RETURN
      int
     IntlChar::LB_EXCLAMATION
      int
     IntlChar::LB_GLUE
      int
     IntlChar::LB_HYPHEN
      int
     IntlChar::LB_IDEOGRAPHIC
      int
     IntlChar::LB_INSEPARABLE
      int
     IntlChar::LB_INSEPERABLE
      int
     IntlChar::LB_INFIX_NUMERIC
      int
     IntlChar::LB_LINE_FEED
      int
     IntlChar::LB_NONSTARTER
      int
     IntlChar::LB_NUMERIC
      int
     IntlChar::LB_OPEN_PUNCTUATION
      int
     IntlChar::LB_POSTFIX_NUMERIC
      int
     IntlChar::LB_PREFIX_NUMERIC
      int
     IntlChar::LB_QUOTATION
      int
     IntlChar::LB_COMPLEX_CONTEXT
      int
     IntlChar::LB_SURROGATE
      int
     IntlChar::LB_SPACE
      int
     IntlChar::LB_BREAK_SYMBOLS
      int
     IntlChar::LB_ZWSPACE
      int
     IntlChar::LB_NEXT_LINE
      int
     IntlChar::LB_WORD_JOINER
      int
     IntlChar::LB_H2
      int
     IntlChar::LB_H3
      int
     IntlChar::LB_JL
      int
     IntlChar::LB_JT
      int
     IntlChar::LB_JV
      int
     IntlChar::LB_CLOSE_PARENTHESIS
      int
     IntlChar::LB_CONDITIONAL_JAPANESE_STARTER
      int
     IntlChar::LB_HEBREW_LETTER
      int
     IntlChar::LB_REGIONAL_INDICATOR
      int
     IntlChar::LB_COUNT
      int
     IntlChar::NT_NONE
      int
     IntlChar::NT_DECIMAL
      int
     IntlChar::NT_DIGIT
      int
     IntlChar::NT_NUMERIC
      int
     IntlChar::NT_COUNT
      int
     IntlChar::HST_NOT_APPLICABLE
      int
     IntlChar::HST_LEADING_JAMO
      int
     IntlChar::HST_VOWEL_JAMO
      int
     IntlChar::HST_TRAILING_JAMO
      int
     IntlChar::HST_LV_SYLLABLE
      int
     IntlChar::HST_LVT_SYLLABLE
      int
     IntlChar::HST_COUNT
      int
     IntlChar::FOLD_CASE_DEFAULT
      int
     IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I
      int
     
| Versão | Descrição | 
|---|---|
| 8.4.0 | As constantes de classe agora são tipadas. | 
| 7.0.6 | A constante IntlChar::NO_NUMERIC_VALUEfoi adicionada. | 
The authoritative source on what these character classes mean is Unicode Standard "Unicode Character Database", documented at https://www.unicode.org/reports/tr44/ (see chapter 5).For a description of the constants, have a look into uchar.h documentation of the ICU4C API: http://icu-project.org/apiref/icu4c/uchar_8h.html