定义和用法
nl_langinfo() 函数返回指定的本地信息。
如果成功，则返回指定的本地信息。如果失败，则返回 false。
语法
nl_langinfo(element)
| 参数 |
描述 |
| element |
必需。规定要返回哪个元素。必须是说明中列出的元素之一。 |
说明
时间和日历：
- ABDAY_(1-7) - Abbreviated name of the numbered day of the week
- DAY_(1-7) - Name of the numbered day of the week (DAY_1 = Sunday)
- ABMON_(1-12) - Abbreviated name of the numbered month of the year
- MON_(1-12) - Name of the numbered month of the year
- AM_STR - String for Ante meridian
- PM_STR - String for Post meridian
- D_T_FMT - String that can be used as the format string for strftime() to represent time and date
- D_FMT - String that can be used as the format string for strftime()
to represent date
- T_FMT - String that can be used as the format string for strftime()
to represent time
- T_FMT_AMPM - String that can be used as the format string for strftime() to represent time in 12-hour format with ante/post meridian
- ERA - Alternate era
- ERA_YEAR - Year in alternate era format
- ERA_D_T_FMT - Date and time in alternate era format (string can be
used in strftime())
- ERA_D_FMT - Date in alternate era format (string can be used in strftime())
- ERA_T_FMT - Time in alternate era format (string can be used in strftime())
货币类别：
- INT_CURR_SYMBOL - Currency symbol (example: USD)
- CURRENCY_SYMBOL - Currency symbol (example: $)
- CRNCYSTR - Same as CURRENCY_SYMBOL
- MON_DECIMAL_POINT - Monetary decimal point character
- MON_THOUSANDS_SEP - Monetary thousands separator
- POSITIVE_SIGN - Positive value character
- NEGATIVE_SIGN -Negative value character
- MON_GROUPING - Array displaying how monetary numbers are grouped (example: 1 000 000)
- INT_FRAC_DIGITS - International fractional digits
- FRAC_DIGITS - Local fractional digits
- P_CS_PRECEDES - True (1) if currency symbol is placed in front of a positive value, False (0) if it is placed behind
- P_SEP_BY_SPACE - True (1) if there is a spaces between the currency symbol and a positive value, False (0) otherwise
- N_CS_PRECEDES - True (1) if currency symbol is placed in front of a negative value, False (0) if it is placed behind
- N_SEP_BY_SPACE - True (1) if there is a spaces between the currency symbol and a negative value, False (0) otherwise
- P_SIGN_POSN - Formatting setting. Possible return values:
- 0 - Parentheses surround the quantity and currency symbol
- 1 - The sign string is placed in front of the quantity and
currency symbol
- 2 - The sign string is placed after the quantity and currency
symbol
- 3 - The sign string is placed immediately in front of the
currency symbol
- 4 - The sign string is placed immediately after the currency
symbol
- N_SIGN_POSN - Formatting setting. Possible return values:
- 0 - Parentheses surround the quantity and currency symbol
- 1 - The sign string is placed in front of the quantity and
currency symbol
- 2 - The sign string is placed after the quantity and currency symbol
- 3 - The sign string is placed immediately in front of the
currency symbol
- 4 - The sign string is placed immediately after the currency symbol
数字类别：
- DECIMAL_POINT - Decimal point character
- RADIXCHAR - Same as DECIMAL_POINT
- THOUSANDS_SEP - Separator character for thousands
- THOUSEP - Same as THOUSANDS_SEP
- GROUPING - Array displaying how numbers are grouped (example: 1
000 000)
通信类别：
- YESEXPR - Regex string for matching yes input
- NOEXPR - Regex string for matching no input
- YESSTR - Output string for yes
- NOSTR - Output string for no
代码集类别：
- CODESET Return a string with the name of the character encoding.