(1) Date
Usage:
Date (format, [time]);
If there is no time argument, the current time is used.
A format is a string in which the following characters have special meaning:
U replaces the number of seconds since a start time (as if it were January 1, 1970)
Y replaces the 4-digit reign.
Y replaces the 2-digit reign.
F replaces the full name of the month in English.
M replaces the English abbreviation of the month.
M replaces the number of months.
Z replaces the number of days since January 1 of the year.
D replaces the number of own.
L REPLACE the English full name of the week.
D replaces the English abbreviation of the day of the week.
W replaces the Day of the Week (number).
H replaces the number of hours (24-hour system).
H replaces the number of hours (12-hour system).
I replace the number of minutes.
s replaces the number of seconds.
A Replace with "AM" or "PM".
A replace with "AM" or "PM".
S replaces the ordinal number suffix, for example: "St", "nd", "rd", "th".
function returns a format string that has been replaced.
(2) getdate (time)
Returns a hash table, each subscript is:
"Seconds"-number of seconds
"Minutes"--fractions
"Hours"--Number of hours
"Mday"--Number of days
"Mon"--Number of months
"Year"--the reign of the year
"Yday"--number of days since January 1
"Weekday"--day of the week, English full name
"Month"--month, full name in English
(3) Gmdate
Similar to date, but first converts time to Greenwich standard.
(4) Mktime
Usage:
Mktime (hours, fractions, seconds, months, days, years);
Returns a time value that can be used for other functions.
(5) Time
Usage:
Time ();
Returns the number of seconds since Horizon January 1, 1970.
(6) Microtime
Usage:
Microtime ();
Returns a string that is divided into two parts with a space, and the latter part equals time ()
Return value, the first part is the number of microseconds.
(7) Checkdate
Usage:
Checkdate (month, day, year);
Returns logical TRUE or logical false.
If:
[1] The year between 1900 and 32767 (including 1900 with 32767);
[2] The month between 1 to 12;
[3] The day is within the allowable number of days of the month (considering a leap year);
Returns the logic true.
(8) Set_time_limit
Usage:
Set_time_limit (number of seconds);
Specifies that the program must run at the end of a specified number of seconds from the time the sentence is run.
Timeout, the program is out of error.