intl
PHP Manual

预定义常量

INTL_MAX_LOCALE_LEN (integer)
Limit on locale length, set to 80 in PHP code. Locale names longer than this limit will not be accepted.
IDNA_DEFAULT (integer)
Prohibit processing of unassigned codepoints in the input for IDN functions and do not check if the input conforms to domain name ASCII rules.
IDNA_ALLOW_UNASSIGNED (integer)
Allow processing of unassigned codepoints in the input for IDN functions.
IDNA_USE_STD3_RULES (integer)
Check if the input for IDN functions conforms to domain name ASCII rules.


intl
PHP Manual