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 proporciona acceso a varios métodos de utilidades que pueden emplearse para obtener información de caracteres Unicode.
Los métodos y las constantes cumplen estrechamente con los nombres y comportamientos empleados por la biblioteca ICU subyacente.
$characterName
, int $nameChoice
= IntlChar::UNICODE_CHAR_NAME
): int$start
,$limit
,$callback
,$nameChoice
= IntlChar::UNICODE_CHAR_NAME
$property
, int $nameChoice
= IntlChar::LONG_PROPERTY_NAME
): string$property
, int $value
, int $nameChoice
= IntlChar::LONG_PROPERTY_NAME
): stringIntlChar::UNICODE_VERSION
IntlChar::CODEPOINT_MIN
IntlChar::CODEPOINT_MAX
IntlChar::PROPERTY_ALPHABETIC
IntlChar::PROPERTY_BINARY_START
IntlChar::PROPERTY_ASCII_HEX_DIGIT
IntlChar::PROPERTY_BIDI_CONTROL
IntlChar::PROPERTY_BIDI_MIRRORED
IntlChar::PROPERTY_DASH
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT
IntlChar::PROPERTY_DEPRECATED
IntlChar::PROPERTY_DIACRITIC
IntlChar::PROPERTY_EXTENDER
IntlChar::PROPERTY_FULL_COMPOSITION_EXCLUSION
IntlChar::PROPERTY_GRAPHEME_BASE
IntlChar::PROPERTY_GRAPHEME_EXTEND
IntlChar::PROPERTY_GRAPHEME_LINK
IntlChar::PROPERTY_HEX_DIGIT
IntlChar::PROPERTY_HYPHEN
IntlChar::PROPERTY_ID_CONTINUE
IntlChar::PROPERTY_ID_START
IntlChar::PROPERTY_IDEOGRAPHIC
IntlChar::PROPERTY_IDS_BINARY_OPERATOR
IntlChar::PROPERTY_IDS_TRINARY_OPERATOR
IntlChar::PROPERTY_JOIN_CONTROL
IntlChar::PROPERTY_LOGICAL_ORDER_EXCEPTION
IntlChar::PROPERTY_LOWERCASE
IntlChar::PROPERTY_MATH
IntlChar::PROPERTY_NONCHARACTER_CODE_POINT
IntlChar::PROPERTY_QUOTATION_MARK
IntlChar::PROPERTY_RADICAL
IntlChar::PROPERTY_SOFT_DOTTED
IntlChar::PROPERTY_TERMINAL_PUNCTUATION
IntlChar::PROPERTY_UNIFIED_IDEOGRAPH
IntlChar::PROPERTY_UPPERCASE
IntlChar::PROPERTY_WHITE_SPACE
IntlChar::PROPERTY_XID_CONTINUE
IntlChar::PROPERTY_XID_START
IntlChar::PROPERTY_CASE_SENSITIVE
IntlChar::PROPERTY_S_TERM
IntlChar::PROPERTY_VARIATION_SELECTOR
IntlChar::PROPERTY_NFD_INERT
IntlChar::PROPERTY_NFKD_INERT
IntlChar::PROPERTY_NFC_INERT
IntlChar::PROPERTY_NFKC_INERT
IntlChar::PROPERTY_SEGMENT_STARTER
IntlChar::PROPERTY_PATTERN_SYNTAX
IntlChar::PROPERTY_PATTERN_WHITE_SPACE
IntlChar::PROPERTY_POSIX_ALNUM
IntlChar::PROPERTY_POSIX_BLANK
IntlChar::PROPERTY_POSIX_GRAPH
IntlChar::PROPERTY_POSIX_PRINT
IntlChar::PROPERTY_POSIX_XDIGIT
IntlChar::PROPERTY_CASED
IntlChar::PROPERTY_CASE_IGNORABLE
IntlChar::PROPERTY_CHANGES_WHEN_LOWERCASED
IntlChar::PROPERTY_CHANGES_WHEN_UPPERCASED
IntlChar::PROPERTY_CHANGES_WHEN_TITLECASED
IntlChar::PROPERTY_CHANGES_WHEN_CASEFOLDED
IntlChar::PROPERTY_CHANGES_WHEN_CASEMAPPED
IntlChar::PROPERTY_CHANGES_WHEN_NFKC_CASEFOLDED
IntlChar::PROPERTY_BINARY_LIMIT
IntlChar::PROPERTY_BIDI_CLASS
IntlChar::PROPERTY_INT_START
IntlChar::PROPERTY_BLOCK
IntlChar::PROPERTY_CANONICAL_COMBINING_CLASS
IntlChar::PROPERTY_DECOMPOSITION_TYPE
IntlChar::PROPERTY_EAST_ASIAN_WIDTH
IntlChar::PROPERTY_GENERAL_CATEGORY
IntlChar::PROPERTY_JOINING_GROUP
IntlChar::PROPERTY_JOINING_TYPE
IntlChar::PROPERTY_LINE_BREAK
IntlChar::PROPERTY_NUMERIC_TYPE
IntlChar::PROPERTY_SCRIPT
IntlChar::PROPERTY_HANGUL_SYLLABLE_TYPE
IntlChar::PROPERTY_NFD_QUICK_CHECK
IntlChar::PROPERTY_NFKD_QUICK_CHECK
IntlChar::PROPERTY_NFC_QUICK_CHECK
IntlChar::PROPERTY_NFKC_QUICK_CHECK
IntlChar::PROPERTY_LEAD_CANONICAL_COMBINING_CLASS
IntlChar::PROPERTY_TRAIL_CANONICAL_COMBINING_CLASS
IntlChar::PROPERTY_GRAPHEME_CLUSTER_BREAK
IntlChar::PROPERTY_SENTENCE_BREAK
IntlChar::PROPERTY_WORD_BREAK
IntlChar::PROPERTY_BIDI_PAIRED_BRACKET_TYPE
IntlChar::PROPERTY_INT_LIMIT
IntlChar::PROPERTY_GENERAL_CATEGORY_MASK
IntlChar::PROPERTY_MASK_START
IntlChar::PROPERTY_MASK_LIMIT
IntlChar::PROPERTY_NUMERIC_VALUE
IntlChar::PROPERTY_DOUBLE_START
IntlChar::PROPERTY_DOUBLE_LIMIT
IntlChar::PROPERTY_AGE
IntlChar::PROPERTY_STRING_START
IntlChar::PROPERTY_BIDI_MIRRORING_GLYPH
IntlChar::PROPERTY_CASE_FOLDING
IntlChar::PROPERTY_ISO_COMMENT
IntlChar::PROPERTY_LOWERCASE_MAPPING
IntlChar::PROPERTY_NAME
IntlChar::PROPERTY_SIMPLE_CASE_FOLDING
IntlChar::PROPERTY_SIMPLE_LOWERCASE_MAPPING
IntlChar::PROPERTY_SIMPLE_TITLECASE_MAPPING
IntlChar::PROPERTY_SIMPLE_UPPERCASE_MAPPING
IntlChar::PROPERTY_TITLECASE_MAPPING
IntlChar::PROPERTY_UNICODE_1_NAME
IntlChar::PROPERTY_UPPERCASE_MAPPING
IntlChar::PROPERTY_BIDI_PAIRED_BRACKET
IntlChar::PROPERTY_STRING_LIMIT
IntlChar::PROPERTY_SCRIPT_EXTENSIONS
IntlChar::PROPERTY_OTHER_PROPERTY_START
IntlChar::PROPERTY_OTHER_PROPERTY_LIMIT
IntlChar::PROPERTY_INVALID_CODE
IntlChar::CHAR_CATEGORY_UNASSIGNED
IntlChar::CHAR_CATEGORY_GENERAL_OTHER_TYPES
IntlChar::CHAR_CATEGORY_UPPERCASE_LETTER
IntlChar::CHAR_CATEGORY_LOWERCASE_LETTER
IntlChar::CHAR_CATEGORY_TITLECASE_LETTER
IntlChar::CHAR_CATEGORY_MODIFIER_LETTER
IntlChar::CHAR_CATEGORY_OTHER_LETTER
IntlChar::CHAR_CATEGORY_NON_SPACING_MARK
IntlChar::CHAR_CATEGORY_ENCLOSING_MARK
IntlChar::CHAR_CATEGORY_COMBINING_SPACING_MARK
IntlChar::CHAR_CATEGORY_DECIMAL_DIGIT_NUMBER
IntlChar::CHAR_CATEGORY_LETTER_NUMBER
IntlChar::CHAR_CATEGORY_OTHER_NUMBER
IntlChar::CHAR_CATEGORY_SPACE_SEPARATOR
IntlChar::CHAR_CATEGORY_LINE_SEPARATOR
IntlChar::CHAR_CATEGORY_PARAGRAPH_SEPARATOR
IntlChar::CHAR_CATEGORY_CONTROL_CHAR
IntlChar::CHAR_CATEGORY_FORMAT_CHAR
IntlChar::CHAR_CATEGORY_PRIVATE_USE_CHAR
IntlChar::CHAR_CATEGORY_SURROGATE
IntlChar::CHAR_CATEGORY_DASH_PUNCTUATION
IntlChar::CHAR_CATEGORY_START_PUNCTUATION
IntlChar::CHAR_CATEGORY_END_PUNCTUATION
IntlChar::CHAR_CATEGORY_CONNECTOR_PUNCTUATION
IntlChar::CHAR_CATEGORY_OTHER_PUNCTUATION
IntlChar::CHAR_CATEGORY_MATH_SYMBOL
IntlChar::CHAR_CATEGORY_CURRENCY_SYMBOL
IntlChar::CHAR_CATEGORY_MODIFIER_SYMBOL
IntlChar::CHAR_CATEGORY_OTHER_SYMBOL
IntlChar::CHAR_CATEGORY_INITIAL_PUNCTUATION
IntlChar::CHAR_CATEGORY_FINAL_PUNCTUATION
IntlChar::CHAR_CATEGORY_CHAR_CATEGORY_COUNT
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_SEPARATOR
IntlChar::CHAR_DIRECTION_EUROPEAN_NUMBER_TERMINATOR
IntlChar::CHAR_DIRECTION_ARABIC_NUMBER
IntlChar::CHAR_DIRECTION_COMMON_NUMBER_SEPARATOR
IntlChar::CHAR_DIRECTION_BLOCK_SEPARATOR
IntlChar::CHAR_DIRECTION_SEGMENT_SEPARATOR
IntlChar::CHAR_DIRECTION_WHITE_SPACE_NEUTRAL
IntlChar::CHAR_DIRECTION_OTHER_NEUTRAL
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_EMBEDDING
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_OVERRIDE
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ARABIC
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_EMBEDDING
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_OVERRIDE
IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_FORMAT
IntlChar::CHAR_DIRECTION_DIR_NON_SPACING_MARK
IntlChar::CHAR_DIRECTION_BOUNDARY_NEUTRAL
IntlChar::CHAR_DIRECTION_FIRST_STRONG_ISOLATE
IntlChar::CHAR_DIRECTION_LEFT_TO_RIGHT_ISOLATE
IntlChar::CHAR_DIRECTION_RIGHT_TO_LEFT_ISOLATE
IntlChar::CHAR_DIRECTION_POP_DIRECTIONAL_ISOLATE
IntlChar::CHAR_DIRECTION_CHAR_DIRECTION_COUNT
IntlChar::BLOCK_CODE_NO_BLOCK
IntlChar::BLOCK_CODE_BASIC_LATIN
IntlChar::BLOCK_CODE_LATIN_1_SUPPLEMENT
IntlChar::BLOCK_CODE_LATIN_EXTENDED_A
IntlChar::BLOCK_CODE_LATIN_EXTENDED_B
IntlChar::BLOCK_CODE_IPA_EXTENSIONS
IntlChar::BLOCK_CODE_SPACING_MODIFIER_LETTERS
IntlChar::BLOCK_CODE_COMBINING_DIACRITICAL_MARKS
IntlChar::BLOCK_CODE_GREEK
IntlChar::BLOCK_CODE_CYRILLIC
IntlChar::BLOCK_CODE_ARMENIAN
IntlChar::BLOCK_CODE_HEBREW
IntlChar::BLOCK_CODE_ARABIC
IntlChar::BLOCK_CODE_SYRIAC
IntlChar::BLOCK_CODE_THAANA
IntlChar::BLOCK_CODE_DEVANAGARI
IntlChar::BLOCK_CODE_BENGALI
IntlChar::BLOCK_CODE_GURMUKHI
IntlChar::BLOCK_CODE_GUJARATI
IntlChar::BLOCK_CODE_ORIYA
IntlChar::BLOCK_CODE_TAMIL
IntlChar::BLOCK_CODE_TELUGU
IntlChar::BLOCK_CODE_KANNADA
IntlChar::BLOCK_CODE_MALAYALAM
IntlChar::BLOCK_CODE_SINHALA
IntlChar::BLOCK_CODE_THAI
IntlChar::BLOCK_CODE_LAO
IntlChar::BLOCK_CODE_TIBETAN
IntlChar::BLOCK_CODE_MYANMAR
IntlChar::BLOCK_CODE_GEORGIAN
IntlChar::BLOCK_CODE_HANGUL_JAMO
IntlChar::BLOCK_CODE_ETHIOPIC
IntlChar::BLOCK_CODE_CHEROKEE
IntlChar::BLOCK_CODE_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS
IntlChar::BLOCK_CODE_OGHAM
IntlChar::BLOCK_CODE_RUNIC
IntlChar::BLOCK_CODE_KHMER
IntlChar::BLOCK_CODE_MONGOLIAN
IntlChar::BLOCK_CODE_LATIN_EXTENDED_ADDITIONAL
IntlChar::BLOCK_CODE_GREEK_EXTENDED
IntlChar::BLOCK_CODE_GENERAL_PUNCTUATION
IntlChar::BLOCK_CODE_SUPERSCRIPTS_AND_SUBSCRIPTS
IntlChar::BLOCK_CODE_CURRENCY_SYMBOLS
IntlChar::BLOCK_CODE_COMBINING_MARKS_FOR_SYMBOLS
IntlChar::BLOCK_CODE_LETTERLIKE_SYMBOLS
IntlChar::BLOCK_CODE_NUMBER_FORMS
IntlChar::BLOCK_CODE_ARROWS
IntlChar::BLOCK_CODE_MATHEMATICAL_OPERATORS
IntlChar::BLOCK_CODE_MISCELLANEOUS_TECHNICAL
IntlChar::BLOCK_CODE_CONTROL_PICTURES
IntlChar::BLOCK_CODE_OPTICAL_CHARACTER_RECOGNITION
IntlChar::BLOCK_CODE_ENCLOSED_ALPHANUMERICS
IntlChar::BLOCK_CODE_BOX_DRAWING
IntlChar::BLOCK_CODE_BLOCK_ELEMENTS
IntlChar::BLOCK_CODE_GEOMETRIC_SHAPES
IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS
IntlChar::BLOCK_CODE_DINGBATS
IntlChar::BLOCK_CODE_BRAILLE_PATTERNS
IntlChar::BLOCK_CODE_CJK_RADICALS_SUPPLEMENT
IntlChar::BLOCK_CODE_KANGXI_RADICALS
IntlChar::BLOCK_CODE_IDEOGRAPHIC_DESCRIPTION_CHARACTERS
IntlChar::BLOCK_CODE_CJK_SYMBOLS_AND_PUNCTUATION
IntlChar::BLOCK_CODE_HIRAGANA
IntlChar::BLOCK_CODE_KATAKANA
IntlChar::BLOCK_CODE_BOPOMOFO
IntlChar::BLOCK_CODE_HANGUL_COMPATIBILITY_JAMO
IntlChar::BLOCK_CODE_KANBUN
IntlChar::BLOCK_CODE_BOPOMOFO_EXTENDED
IntlChar::BLOCK_CODE_ENCLOSED_CJK_LETTERS_AND_MONTHS
IntlChar::BLOCK_CODE_CJK_COMPATIBILITY
IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A
IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS
IntlChar::BLOCK_CODE_YI_SYLLABLES
IntlChar::BLOCK_CODE_YI_RADICALS
IntlChar::BLOCK_CODE_HANGUL_SYLLABLES
IntlChar::BLOCK_CODE_HIGH_SURROGATES
IntlChar::BLOCK_CODE_HIGH_PRIVATE_USE_SURROGATES
IntlChar::BLOCK_CODE_LOW_SURROGATES
IntlChar::BLOCK_CODE_PRIVATE_USE_AREA
IntlChar::BLOCK_CODE_PRIVATE_USE
IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_IDEOGRAPHS
IntlChar::BLOCK_CODE_ALPHABETIC_PRESENTATION_FORMS
IntlChar::BLOCK_CODE_ARABIC_PRESENTATION_FORMS_A
IntlChar::BLOCK_CODE_COMBINING_HALF_MARKS
IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_FORMS
IntlChar::BLOCK_CODE_SMALL_FORM_VARIANTS
IntlChar::BLOCK_CODE_ARABIC_PRESENTATION_FORMS_B
IntlChar::BLOCK_CODE_SPECIALS
IntlChar::BLOCK_CODE_HALFWIDTH_AND_FULLWIDTH_FORMS
IntlChar::BLOCK_CODE_OLD_ITALIC
IntlChar::BLOCK_CODE_GOTHIC
IntlChar::BLOCK_CODE_DESERET
IntlChar::BLOCK_CODE_BYZANTINE_MUSICAL_SYMBOLS
IntlChar::BLOCK_CODE_MUSICAL_SYMBOLS
IntlChar::BLOCK_CODE_MATHEMATICAL_ALPHANUMERIC_SYMBOLS
IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_B
IntlChar::BLOCK_CODE_CJK_COMPATIBILITY_IDEOGRAPHS_SUPPLEMENT
IntlChar::BLOCK_CODE_CYRILLIC_SUPPLEMENT
IntlChar::BLOCK_CODE_CYRILLIC_SUPPLEMENTARY
IntlChar::BLOCK_CODE_TAGALOG
IntlChar::BLOCK_CODE_HANUNOO
IntlChar::BLOCK_CODE_BUHID
IntlChar::BLOCK_CODE_TAGBANWA
IntlChar::BLOCK_CODE_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_A
IntlChar::BLOCK_CODE_SUPPLEMENTAL_ARROWS_A
IntlChar::BLOCK_CODE_SUPPLEMENTAL_ARROWS_B
IntlChar::BLOCK_CODE_MISCELLANEOUS_MATHEMATICAL_SYMBOLS_B
IntlChar::BLOCK_CODE_SUPPLEMENTAL_MATHEMATICAL_OPERATORS
IntlChar::BLOCK_CODE_KATAKANA_PHONETIC_EXTENSIONS
IntlChar::BLOCK_CODE_VARIATION_SELECTORS
IntlChar::BLOCK_CODE_SUPPLEMENTARY_PRIVATE_USE_AREA_A
IntlChar::BLOCK_CODE_SUPPLEMENTARY_PRIVATE_USE_AREA_B
IntlChar::BLOCK_CODE_LIMBU
IntlChar::BLOCK_CODE_TAI_LE
IntlChar::BLOCK_CODE_KHMER_SYMBOLS
IntlChar::BLOCK_CODE_PHONETIC_EXTENSIONS
IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS_AND_ARROWS
IntlChar::BLOCK_CODE_YIJING_HEXAGRAM_SYMBOLS
IntlChar::BLOCK_CODE_LINEAR_B_SYLLABARY
IntlChar::BLOCK_CODE_LINEAR_B_IDEOGRAMS
IntlChar::BLOCK_CODE_AEGEAN_NUMBERS
IntlChar::BLOCK_CODE_UGARITIC
IntlChar::BLOCK_CODE_SHAVIAN
IntlChar::BLOCK_CODE_OSMANYA
IntlChar::BLOCK_CODE_CYPRIOT_SYLLABARY
IntlChar::BLOCK_CODE_TAI_XUAN_JING_SYMBOLS
IntlChar::BLOCK_CODE_VARIATION_SELECTORS_SUPPLEMENT
IntlChar::BLOCK_CODE_ANCIENT_GREEK_MUSICAL_NOTATION
IntlChar::BLOCK_CODE_ANCIENT_GREEK_NUMBERS
IntlChar::BLOCK_CODE_ARABIC_SUPPLEMENT
IntlChar::BLOCK_CODE_BUGINESE
IntlChar::BLOCK_CODE_CJK_STROKES
IntlChar::BLOCK_CODE_COMBINING_DIACRITICAL_MARKS_SUPPLEMENT
IntlChar::BLOCK_CODE_COPTIC
IntlChar::BLOCK_CODE_ETHIOPIC_EXTENDED
IntlChar::BLOCK_CODE_ETHIOPIC_SUPPLEMENT
IntlChar::BLOCK_CODE_GEORGIAN_SUPPLEMENT
IntlChar::BLOCK_CODE_GLAGOLITIC
IntlChar::BLOCK_CODE_KHAROSHTHI
IntlChar::BLOCK_CODE_MODIFIER_TONE_LETTERS
IntlChar::BLOCK_CODE_NEW_TAI_LUE
IntlChar::BLOCK_CODE_OLD_PERSIAN
IntlChar::BLOCK_CODE_PHONETIC_EXTENSIONS_SUPPLEMENT
IntlChar::BLOCK_CODE_SUPPLEMENTAL_PUNCTUATION
IntlChar::BLOCK_CODE_SYLOTI_NAGRI
IntlChar::BLOCK_CODE_TIFINAGH
IntlChar::BLOCK_CODE_VERTICAL_FORMS
IntlChar::BLOCK_CODE_NKO
IntlChar::BLOCK_CODE_BALINESE
IntlChar::BLOCK_CODE_LATIN_EXTENDED_C
IntlChar::BLOCK_CODE_LATIN_EXTENDED_D
IntlChar::BLOCK_CODE_PHAGS_PA
IntlChar::BLOCK_CODE_PHOENICIAN
IntlChar::BLOCK_CODE_CUNEIFORM
IntlChar::BLOCK_CODE_CUNEIFORM_NUMBERS_AND_PUNCTUATION
IntlChar::BLOCK_CODE_COUNTING_ROD_NUMERALS
IntlChar::BLOCK_CODE_SUNDANESE
IntlChar::BLOCK_CODE_LEPCHA
IntlChar::BLOCK_CODE_OL_CHIKI
IntlChar::BLOCK_CODE_CYRILLIC_EXTENDED_A
IntlChar::BLOCK_CODE_VAI
IntlChar::BLOCK_CODE_CYRILLIC_EXTENDED_B
IntlChar::BLOCK_CODE_SAURASHTRA
IntlChar::BLOCK_CODE_KAYAH_LI
IntlChar::BLOCK_CODE_REJANG
IntlChar::BLOCK_CODE_CHAM
IntlChar::BLOCK_CODE_ANCIENT_SYMBOLS
IntlChar::BLOCK_CODE_PHAISTOS_DISC
IntlChar::BLOCK_CODE_LYCIAN
IntlChar::BLOCK_CODE_CARIAN
IntlChar::BLOCK_CODE_LYDIAN
IntlChar::BLOCK_CODE_MAHJONG_TILES
IntlChar::BLOCK_CODE_DOMINO_TILES
IntlChar::BLOCK_CODE_SAMARITAN
IntlChar::BLOCK_CODE_UNIFIED_CANADIAN_ABORIGINAL_SYLLABICS_EXTENDED
IntlChar::BLOCK_CODE_TAI_THAM
IntlChar::BLOCK_CODE_VEDIC_EXTENSIONS
IntlChar::BLOCK_CODE_LISU
IntlChar::BLOCK_CODE_BAMUM
IntlChar::BLOCK_CODE_COMMON_INDIC_NUMBER_FORMS
IntlChar::BLOCK_CODE_DEVANAGARI_EXTENDED
IntlChar::BLOCK_CODE_HANGUL_JAMO_EXTENDED_A
IntlChar::BLOCK_CODE_JAVANESE
IntlChar::BLOCK_CODE_MYANMAR_EXTENDED_A
IntlChar::BLOCK_CODE_TAI_VIET
IntlChar::BLOCK_CODE_MEETEI_MAYEK
IntlChar::BLOCK_CODE_HANGUL_JAMO_EXTENDED_B
IntlChar::BLOCK_CODE_IMPERIAL_ARAMAIC
IntlChar::BLOCK_CODE_OLD_SOUTH_ARABIAN
IntlChar::BLOCK_CODE_AVESTAN
IntlChar::BLOCK_CODE_INSCRIPTIONAL_PARTHIAN
IntlChar::BLOCK_CODE_INSCRIPTIONAL_PAHLAVI
IntlChar::BLOCK_CODE_OLD_TURKIC
IntlChar::BLOCK_CODE_RUMI_NUMERAL_SYMBOLS
IntlChar::BLOCK_CODE_KAITHI
IntlChar::BLOCK_CODE_EGYPTIAN_HIEROGLYPHS
IntlChar::BLOCK_CODE_ENCLOSED_ALPHANUMERIC_SUPPLEMENT
IntlChar::BLOCK_CODE_ENCLOSED_IDEOGRAPHIC_SUPPLEMENT
IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_C
IntlChar::BLOCK_CODE_MANDAIC
IntlChar::BLOCK_CODE_BATAK
IntlChar::BLOCK_CODE_ETHIOPIC_EXTENDED_A
IntlChar::BLOCK_CODE_BRAHMI
IntlChar::BLOCK_CODE_BAMUM_SUPPLEMENT
IntlChar::BLOCK_CODE_KANA_SUPPLEMENT
IntlChar::BLOCK_CODE_PLAYING_CARDS
IntlChar::BLOCK_CODE_MISCELLANEOUS_SYMBOLS_AND_PICTOGRAPHS
IntlChar::BLOCK_CODE_EMOTICONS
IntlChar::BLOCK_CODE_TRANSPORT_AND_MAP_SYMBOLS
IntlChar::BLOCK_CODE_ALCHEMICAL_SYMBOLS
IntlChar::BLOCK_CODE_CJK_UNIFIED_IDEOGRAPHS_EXTENSION_D
IntlChar::BLOCK_CODE_ARABIC_EXTENDED_A
IntlChar::BLOCK_CODE_ARABIC_MATHEMATICAL_ALPHABETIC_SYMBOLS
IntlChar::BLOCK_CODE_CHAKMA
IntlChar::BLOCK_CODE_MEETEI_MAYEK_EXTENSIONS
IntlChar::BLOCK_CODE_MEROITIC_CURSIVE
IntlChar::BLOCK_CODE_MEROITIC_HIEROGLYPHS
IntlChar::BLOCK_CODE_MIAO
IntlChar::BLOCK_CODE_SHARADA
IntlChar::BLOCK_CODE_SORA_SOMPENG
IntlChar::BLOCK_CODE_SUNDANESE_SUPPLEMENT
IntlChar::BLOCK_CODE_TAKRI
IntlChar::BLOCK_CODE_COUNT
IntlChar::BLOCK_CODE_INVALID_CODE
IntlChar::BPT_NONE
IntlChar::BPT_OPEN
IntlChar::BPT_CLOSE
IntlChar::BPT_COUNT
IntlChar::EA_NEUTRAL
IntlChar::EA_AMBIGUOUS
IntlChar::EA_HALFWIDTH
IntlChar::EA_FULLWIDTH
IntlChar::EA_NARROW
IntlChar::EA_WIDE
IntlChar::EA_COUNT
IntlChar::UNICODE_CHAR_NAME
IntlChar::UNICODE_10_CHAR_NAME
IntlChar::EXTENDED_CHAR_NAME
IntlChar::CHAR_NAME_ALIAS
IntlChar::CHAR_NAME_CHOICE_COUNT
IntlChar::SHORT_PROPERTY_NAME
IntlChar::LONG_PROPERTY_NAME
IntlChar::PROPERTY_NAME_CHOICE_COUNT
IntlChar::DT_NONE
IntlChar::DT_CANONICAL
IntlChar::DT_COMPAT
IntlChar::DT_CIRCLE
IntlChar::DT_FINAL
IntlChar::DT_FONT
IntlChar::DT_FRACTION
IntlChar::DT_INITIAL
IntlChar::DT_ISOLATED
IntlChar::DT_MEDIAL
IntlChar::DT_NARROW
IntlChar::DT_NOBREAK
IntlChar::DT_SMALL
IntlChar::DT_SQUARE
IntlChar::DT_SUB
IntlChar::DT_SUPER
IntlChar::DT_VERTICAL
IntlChar::DT_WIDE
IntlChar::DT_COUNT
IntlChar::JT_NON_JOINING
IntlChar::JT_JOIN_CAUSING
IntlChar::JT_DUAL_JOINING
IntlChar::JT_LEFT_JOINING
IntlChar::JT_RIGHT_JOINING
IntlChar::JT_TRANSPARENT
IntlChar::JT_COUNT
IntlChar::JG_NO_JOINING_GROUP
IntlChar::JG_AIN
IntlChar::JG_ALAPH
IntlChar::JG_ALEF
IntlChar::JG_BEH
IntlChar::JG_BETH
IntlChar::JG_DAL
IntlChar::JG_DALATH_RISH
IntlChar::JG_E
IntlChar::JG_FEH
IntlChar::JG_FINAL_SEMKATH
IntlChar::JG_GAF
IntlChar::JG_GAMAL
IntlChar::JG_HAH
IntlChar::JG_TEH_MARBUTA_GOAL
IntlChar::JG_HAMZA_ON_HEH_GOAL
IntlChar::JG_HE
IntlChar::JG_HEH
IntlChar::JG_HEH_GOAL
IntlChar::JG_HETH
IntlChar::JG_KAF
IntlChar::JG_KAPH
IntlChar::JG_KNOTTED_HEH
IntlChar::JG_LAM
IntlChar::JG_LAMADH
IntlChar::JG_MEEM
IntlChar::JG_MIM
IntlChar::JG_NOON
IntlChar::JG_NUN
IntlChar::JG_PE
IntlChar::JG_QAF
IntlChar::JG_QAPH
IntlChar::JG_REH
IntlChar::JG_REVERSED_PE
IntlChar::JG_SAD
IntlChar::JG_SADHE
IntlChar::JG_SEEN
IntlChar::JG_SEMKATH
IntlChar::JG_SHIN
IntlChar::JG_SWASH_KAF
IntlChar::JG_SYRIAC_WAW
IntlChar::JG_TAH
IntlChar::JG_TAW
IntlChar::JG_TEH_MARBUTA
IntlChar::JG_TETH
IntlChar::JG_WAW
IntlChar::JG_YEH
IntlChar::JG_YEH_BARREE
IntlChar::JG_YEH_WITH_TAIL
IntlChar::JG_YUDH
IntlChar::JG_YUDH_HE
IntlChar::JG_ZAIN
IntlChar::JG_FE
IntlChar::JG_KHAPH
IntlChar::JG_ZHAIN
IntlChar::JG_BURUSHASKI_YEH_BARREE
IntlChar::JG_FARSI_YEH
IntlChar::JG_NYA
IntlChar::JG_ROHINGYA_YEH
IntlChar::JG_COUNT
IntlChar::GCB_OTHER
IntlChar::GCB_CONTROL
IntlChar::GCB_CR
IntlChar::GCB_EXTEND
IntlChar::GCB_L
IntlChar::GCB_LF
IntlChar::GCB_LV
IntlChar::GCB_LVT
IntlChar::GCB_T
IntlChar::GCB_V
IntlChar::GCB_SPACING_MARK
IntlChar::GCB_PREPEND
IntlChar::GCB_REGIONAL_INDICATOR
IntlChar::GCB_COUNT
IntlChar::WB_OTHER
IntlChar::WB_ALETTER
IntlChar::WB_FORMAT
IntlChar::WB_KATAKANA
IntlChar::WB_MIDLETTER
IntlChar::WB_MIDNUM
IntlChar::WB_NUMERIC
IntlChar::WB_EXTENDNUMLET
IntlChar::WB_CR
IntlChar::WB_EXTEND
IntlChar::WB_LF
IntlChar::WB_MIDNUMLET
IntlChar::WB_NEWLINE
IntlChar::WB_REGIONAL_INDICATOR
IntlChar::WB_HEBREW_LETTER
IntlChar::WB_SINGLE_QUOTE
IntlChar::WB_DOUBLE_QUOTE
IntlChar::WB_COUNT
IntlChar::SB_OTHER
IntlChar::SB_ATERM
IntlChar::SB_CLOSE
IntlChar::SB_FORMAT
IntlChar::SB_LOWER
IntlChar::SB_NUMERIC
IntlChar::SB_OLETTER
IntlChar::SB_SEP
IntlChar::SB_SP
IntlChar::SB_STERM
IntlChar::SB_UPPER
IntlChar::SB_CR
IntlChar::SB_EXTEND
IntlChar::SB_LF
IntlChar::SB_SCONTINUE
IntlChar::SB_COUNT
IntlChar::LB_UNKNOWN
IntlChar::LB_AMBIGUOUS
IntlChar::LB_ALPHABETIC
IntlChar::LB_BREAK_BOTH
IntlChar::LB_BREAK_AFTER
IntlChar::LB_BREAK_BEFORE
IntlChar::LB_MANDATORY_BREAK
IntlChar::LB_CONTINGENT_BREAK
IntlChar::LB_CLOSE_PUNCTUATION
IntlChar::LB_COMBINING_MARK
IntlChar::LB_CARRIAGE_RETURN
IntlChar::LB_EXCLAMATION
IntlChar::LB_GLUE
IntlChar::LB_HYPHEN
IntlChar::LB_IDEOGRAPHIC
IntlChar::LB_INSEPARABLE
IntlChar::LB_INSEPERABLE
IntlChar::LB_INFIX_NUMERIC
IntlChar::LB_LINE_FEED
IntlChar::LB_NONSTARTER
IntlChar::LB_NUMERIC
IntlChar::LB_OPEN_PUNCTUATION
IntlChar::LB_POSTFIX_NUMERIC
IntlChar::LB_PREFIX_NUMERIC
IntlChar::LB_QUOTATION
IntlChar::LB_COMPLEX_CONTEXT
IntlChar::LB_SURROGATE
IntlChar::LB_SPACE
IntlChar::LB_BREAK_SYMBOLS
IntlChar::LB_ZWSPACE
IntlChar::LB_NEXT_LINE
IntlChar::LB_WORD_JOINER
IntlChar::LB_H2
IntlChar::LB_H3
IntlChar::LB_JL
IntlChar::LB_JT
IntlChar::LB_JV
IntlChar::LB_CLOSE_PARENTHESIS
IntlChar::LB_CONDITIONAL_JAPANESE_STARTER
IntlChar::LB_HEBREW_LETTER
IntlChar::LB_REGIONAL_INDICATOR
IntlChar::LB_COUNT
IntlChar::NT_NONE
IntlChar::NT_DECIMAL
IntlChar::NT_DIGIT
IntlChar::NT_NUMERIC
IntlChar::NT_COUNT
IntlChar::HST_NOT_APPLICABLE
IntlChar::HST_LEADING_JAMO
IntlChar::HST_VOWEL_JAMO
IntlChar::HST_TRAILING_JAMO
IntlChar::HST_LV_SYLLABLE
IntlChar::HST_LVT_SYLLABLE
IntlChar::HST_COUNT
IntlChar::FOLD_CASE_DEFAULT
IntlChar::FOLD_CASE_EXCLUDE_SPECIAL_I
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