Date time function date

a - "am" or "pm"
A - "AM" or "PM"
d - day, two digits, if there are less than two digits, add zero in front; for example: "01" to "31"
D - day of the week, three English letters; such as: "Fri"
F - month, full English name; such as: "January"
h - hour in 12-hour format; such as : "01" to "12"
H - hours in 24-hour format; such as: "00" to "23"
g - hours in 12-hour format, no zeros are added for less than two digits; such as: "1 " to 12"
G - hours in 24-hour format, no zeros are added for less than two digits; such as: "0" to "23"
i - minutes; such as: "00" to "59"
j - day, two digits, if there are less than two digits, do not add zero; such as: "1" to "31"
l - day of the week, full English name; such as: "Friday"
m - month, Two digits, if there are less than two digits, add zeros in front; such as: "01" to "12"
n - Month, two digits, if there are less than two digits, do not add zeros; such as: "1" to" 12"
M - month, three English letters; such as: "Jan"
s - seconds; such as: "00" to "59"
S - add an English ordinal at the end of the word, two English letters ; Such as: "th", "nd"
t - the number of days in the specified month; such as: "28" to "31"
U - the total number of seconds
w - the numeric day of the week, such as: "0" (Sunday) to "6" (Saturday)
Y - year, four digits; such as: "1999"
y - year, two digits; such as: "99"
z - The day of the year; such as: "0" to "365"

The above has introduced the date and time function date, including the relevant aspects. I hope it will be helpful to friends who are interested in PHP tutorials.