Predefined Constants
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INTL_ICU_VERSION
(string) - The current ICU library version as a dotted-decimal string.
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INTL_MAX_LOCALE_LEN
(int) - Limit on locale length, set to 80 in PHP code. Locale names longer than this limit will not be accepted.
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IDNA_DEFAULT
(int) - Prohibit processing of unassigned codepoints in the input for IDN functions and do not check if the input conforms to domain name ASCII rules.
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IDNA_ALLOW_UNASSIGNED
(int) - Allow processing of unassigned codepoints in the input for IDN functions.
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IDNA_USE_STD3_RULES
(int) - Check if the input for IDN functions conforms to domain name ASCII rules.
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IDNA_CHECK_BIDI
(int) - Check whether the input conforms to the BiDi rules. Ignored by the IDNA2003 implementation, which always performs this check.
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IDNA_CHECK_CONTEXTJ
(int) - Check whether the input conforms to the CONTEXTJ rules. Ignored by the IDNA2003 implementation, as this check is new in IDNA2008.
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IDNA_NONTRANSITIONAL_TO_ASCII
(int) - Option for nontransitional processing in idn_to_ascii(). Transitional processing is activated by default. This option is ignored by the IDNA2003 implementation.
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IDNA_NONTRANSITIONAL_TO_UNICODE
(int) - Option for nontransitional processing in idn_to_utf8(). Transitional processing is activated by default. This option is ignored by the IDNA2003 implementation.
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INTL_IDNA_VARIANT_2003
(int) - Use IDNA 2003 algorithm in idn_to_utf8() and idn_to_ascii(). This is the default. This constant and using the default has been deprecated as of PHP 7.2.0.
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INTL_IDNA_VARIANT_UTS46
(int) - Use UTS #46 algorithm in idn_to_utf8() and idn_to_ascii(). Available as of ICU 4.6.
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IDNA_ERROR_EMPTY_LABEL
(int) -
IDNA_ERROR_LABEL_TOO_LONG
(int) -
IDNA_ERROR_DOMAIN_NAME_TOO_LONG
(int) -
IDNA_ERROR_LEADING_HYPHEN
(int) -
IDNA_ERROR_TRAILING_HYPHEN
(int) -
IDNA_ERROR_HYPHEN_3_4
(int) -
IDNA_ERROR_LEADING_COMBINING_MARK
(int) -
IDNA_ERROR_DISALLOWED
(int) -
IDNA_ERROR_PUNYCODE
(int) -
IDNA_ERROR_LABEL_HAS_DOT
(int) -
IDNA_ERROR_INVALID_ACE_LABEL
(int) -
IDNA_ERROR_BIDI
(int) -
IDNA_ERROR_CONTEXTJ
(int) - Errors reported in a bitset returned by the UTS #46 algorithm in idn_to_utf8() and idn_to_ascii().