Returns a string formatted according to the given format
string using the given
timestamp or the current local time if no timestamp
is given. Month and weekday names and other language
dependent strings respect the current locale set with
setlocale().
The following conversion specifiers are recognized in
the format string:
%a - abbreviated weekday name according to the
current locale
%A - full weekday name according to the current
locale
%b - abbreviated month name according to the current
locale
%B - full month name according to the current
locale
%c - preferred date and time representation for the
current locale
%C - century number (the year divided by 100 and
truncated to an integer, range 00 to 99)
%d - day of the month as a decimal number (range 01
to 31)
%D - same as %m/%d/%y
%e - day of the month as a decimal number, a single
digit is preceded by a space (range ' 1' to '31')
%g - like %G, but without the century.
%G - The 4-digit year corresponding to the ISO week
number (see %V). This has the same format and value as
%Y, except that if the ISO week number belongs to the
previous or next year, that year is used instead.
%h - same as %b
%H - hour as a decimal number using a 24-hour clock
(range 00 to 23)
%I - hour as a decimal number using a 12-hour clock
(range 01 to 12)
%j - day of the year as a decimal number (range 001
to 366)
%m - month as a decimal number (range 01 to 12)
%M - minute as a decimal number
%n - newline character
%p - either `am' or `pm' according to the given time
value, or the corresponding strings for the current
locale
%r - time in a.m. and p.m. notation
%R - time in 24 hour notation
%S - second as a decimal number
%t - tab character
%T - current time, equal to %H:%M:%S
%u - weekday as a decimal number [1,7], with 1
representing Monday
|
%U - week number of the current year as a decimal
number, starting with the first Sunday as the first day
of the first week
%V - The ISO 8601:1988 week number of the current
year as a decimal number, range 01 to 53, where week 1 is
the first week that has at least 4 days in the current
year, and with Monday as the first day of the week. (Use
%G or %g for the year component that corresponds to the
week number for the specified timestamp.)
%W - week number of the current year as a decimal
number, starting with the first Monday as the first day
of the first week
%w - day of the week as a decimal, Sunday being
0
%x - preferred date representation for the current
locale without the time
%X - preferred time representation for the current
locale without the date
%y - year as a decimal number without a century
(range 00 to 99)
%Y - year as a decimal number including the
century
%Z - time zone or name or abbreviation
%% - a literal `%' character
注: Not all conversion specifiers may be supported by your C library, in which case they will not be supported by PHP's strftime(). This means that e.g. %e, %T, %R and %D (there might be more) will not work on Windows.
注: %G and %V, which are based on ISO 8601:1988 week numbers can give unexpected (albiet correct) results if the numbering system is not thoroughly understood. See %V above and example below.
See also setlocale() and mktime()
and the
Open Group specification of strftime().