PHP Date Knowledge _php Tutorial

(1) Date
Usage: Date (format, [time]);
If there is no time parameter, the current time is used. The format is a string in which the following characters have special meanings:
U is replaced by the number of seconds since a starting time (as if it were January 1, 1970)

Y Replace with 4-bit era name.
Y Replace with 2-bit era name.
F Replace the full English name of the month.
M replaced by the abbreviation of the month.
M replaced by the number of months.
Z is replaced by the number of days since January 1 of the year.
D replaces the number of Rewardcash octopus.
L Replace the day of the week with the full English name.
D Replace the English abbreviation of the day of the week.
W replaces the Day of the Week (number).
H is replaced by the number of hours (24-hour system).
H is replaced by the number of hours (12-hour system).
I replace it with the number of minutes.
S is replaced by the number of seconds.
A is replaced with "AM" or "PM".
A is replaced with "AM" or "PM".
S replaces the sequential numeric suffix, for example: "St", "nd", "rd", "th".

(2)PHP calculates two time-difference methods

$date =floor ((Strtotime ($enddate)-strtotime ($startdate))/86400);

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