(PHP 4 >= 4.1.0, PHP 5)
nl_langinfo — Query language and locale information
$item
   )nl_langinfo() is used to access individual elements of the locale categories. Unlike localeconv(), which returns all of the elements, nl_langinfo() allows you to select any specific element.
item
       item may be an integer value of the element or the
       constant name of the element. The following is a list of constant names
       for item that may be used and their description.
       Some of these constants may not be defined or hold no value for certain
       locales.
       
| Constant | Description | 
|---|---|
| LC_TIME Category Constants | |
| ABDAY_(1-7) | Abbreviated name of n-th day of the week. | 
| DAY_(1-7) | Name of the n-th day of the week (DAY_1 = Sunday). | 
| ABMON_(1-12) | Abbreviated name of the n-th month of the year. | 
| MON_(1-12) | Name of the n-th 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()). | 
| LC_MONETARY Category Constants | |
| INT_CURR_SYMBOL | International currency symbol. | 
| CURRENCY_SYMBOL | Local currency symbol. | 
| CRNCYSTR | Same value as CURRENCY_SYMBOL. | 
| MON_DECIMAL_POINT | Decimal point character. | 
| MON_THOUSANDS_SEP | Thousands separator (groups of three digits). | 
| MON_GROUPING | Like "grouping" element. | 
| POSITIVE_SIGN | Sign for positive values. | 
| NEGATIVE_SIGN | Sign for negative values. | 
| INT_FRAC_DIGITS | International fractional digits. | 
| FRAC_DIGITS | Local fractional digits. | 
| P_CS_PRECEDES | Returns 1 if CURRENCY_SYMBOLprecedes a positive value. | 
| P_SEP_BY_SPACE | Returns 1 if a space separates CURRENCY_SYMBOLfrom a positive value. | 
| N_CS_PRECEDES | Returns 1 if CURRENCY_SYMBOLprecedes a negative value. | 
| N_SEP_BY_SPACE | Returns 1 if a space separates CURRENCY_SYMBOLfrom a negative value. | 
| P_SIGN_POSN | 
 | 
| N_SIGN_POSN | |
| LC_NUMERIC Category Constants | |
| DECIMAL_POINT | Decimal point character. | 
| RADIXCHAR | Same value as DECIMAL_POINT. | 
| THOUSANDS_SEP | Separator character for thousands (groups of three digits). | 
| THOUSEP | Same value as THOUSANDS_SEP. | 
| GROUPING | |
| LC_MESSAGES Category Constants | |
| YESEXPR | Regex string for matching "yes" input. | 
| NOEXPR | Regex string for matching "no" input. | 
| YESSTR | Output string for "yes". | 
| NOSTR | Output string for "no". | 
| LC_CTYPE Category Constants | |
| CODESET | Return a string with the name of the character encoding. | 
   Returns the element as a string, or FALSE if item
   is not valid.
  
Note: This function is not implemented on Windows platforms.