$t=timeechodate("Y-m-d h:i:s",$t
A-"AM" or "PM"
A-"AM" or "PM"
D-A few days, two digits, if less than two is the front 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"
H-12 hours of the hour; such as: "01" to "12"
H-hour of 24-hour system; such as: "00" to "23"
G-12 hours of the hour, less than two digits do not fill 0; such as: "1" to 12 "
G-24 hours of the hour, less than two does not fill 0; such as: "0" to "23"
I-minute; such as: "00" to "59"
J-A few days, two digits, if less than two bits do not fill 0; such as: "1" to "31"
L-Day of the week, English full name; such as: "Friday"
M-month, two digits, if less than two digits in front of 0; such as: "01" to "12"
N-month, two digits, if less than two digits does not fill 0; such as: "1" to "12"
M-month, three letters of English; such as: "Jan" 
s - seconds; such as: "XX" to "the"  
s - with English ordinal numbers, two English letters; such as: "th", "nd"  
t - the number of days in the specified month; such as: " to "  
u - total number of seconds  
w - Number of days of the week, such as: "0" (Sunday) to "6" (Saturday)
y - , four-digit; such as: "1999"  
Y - year, two digits; such as: "" "  
z - the day of the year; such as: "0" to "365"