PHP Date function Parameters detailed _php basics

Time () in PHP is to get a number that indicates how many seconds have gone from 1970-01-01 to now, it's strange
But this is convenient to calculate,

To find out the day before is time () -60*60*24;
To find out the time of the previous year is timing () *60*60*24*365

So how do you change this number into a date format, and you need to use the date function?



$t =time ();
echo Date ("Y-m-d h:i:s", $t);

The format of the first parameter is expressed separately:
A-"AM" or "PM"
A-"AM" or "PM"
D-A few days, two digits, if less than two digits before the 0; such as: "01" to "31"
D-Days of the week, three English letters; such as: "Fri"
F-month, full name in English; such as: "January"
Hours of h-12 hours; such as: "01" to "12"
H-24 hours of hours; such as: "00" to "23"
G-12 hours, less than two-bit not to fill 0; such as: "1" to 12 "
G-24 hours of hours, less than two to fill 0; such as: "0" to "23"
I-minute; such as: "00" to "59"
J-A few days, two digits, if less than two digits do not fill 0; such as: "1" to "31"
L-Days of the week, full name in English; such as: "Friday"
M-month, two digits, if less than two digits in front of the 0; such as: "01" to "12"
N-month, two digits, if less than two digits will not fill 0; such as: "1" to "12"
M-month, three English letters; such as: "The"
S-seconds; such as: "00" to "59"
S-word tail plus English ordinal number, two English letters; such as: "th", "nd"
T-Specifies the number of days of the month; such as: "28" to "31"
U-Total number of seconds
W-Number of days 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 ordinal of the year; such as: "0" to "365"
Other characters that are not listed directly list the character