PHP date addition and subtraction class, very good _ PHP Tutorial

PHP date addition and subtraction class, very good. How to use this class? See the following demo: Copy the code: $ temptimetime (); echostrftime (% Hh % M % A % d % B, $ temptime); $ datenewDateAccount (); $ How does tempti use this class? See the following demo:

The code is as follows:

$ Temptime = time ();
Echo strftime ("% Hh % M % A % d % B", $ temptime );
$ Date = new DateAccount ();
$ Temptime = $ date-> DateAdd ("n", 50, $ temptime );
Echo"

";
Echo strftime ("% Hh % M % A % d % B", $ temptime );

The code is as follows:

$ Temptime = time ();
Echo strftime ("% Hh % M % A % d % B", $ temptime );
$ Date = new DateAccount ();
$ Temptime = $ date-> DateAdd ("n", 50, $ temptime );
Echo"

";
Echo strftime ("% Hh % M % A % d % B", $ temptime );

If everything goes well, you can see the following results:
15h41 Saturday 03 Jun
16h31 Saturday 03 Jun

The code is as follows:

$ Currenttime = time ();
Echo "Current time:". strftime ("% Hh % M % A % d % B", $ currenttime )."
";
$ Date = new DateAccount ();
$ Newtime = $ date-> DateAdd ("n", 50, $ currenttime );
Echo "Time plus 50 minutes:". strftime ("% Hh % M % A % d % B", $ newtime )."
";
$ Temptime = $ date-> DateDiff ("n", $ currenttime, $ newtime );
Echo "Interval between two times:". $ temptime;

The code is as follows:

$ Currenttime = time ();
Echo "Current time:". strftime ("% Hh % M % A % d % B", $ currenttime )."
";
$ Date = new DateAccount ();
$ Newtime = $ date-> DateAdd ("n", 50, $ currenttime );
Echo "Time plus 50 minutes:". strftime ("% Hh % M % A % d % B", $ newtime )."
";
$ Temptime = $ date-> DateDiff ("n", $ currenttime, $ newtime );
Echo "Interval between two times:". $ temptime;

If everything goes well, you can see the following results:
Current time: 16h23 Saturday 03 Jun
Time plus 50 minutes: 17h13 Saturday 03 Jun
Interval between two times: 50

The code is as follows:

Class DateAccount {
Function _ construct (){
}
Function DateAdd ($ interval, $ number, $ date ){
$ Date_time_array = getdate ($ date );
$ Hours = $ date_time_array ["hours"];
$ Minutes = $ date_time_array ["minutes"];
$ Seconds = $ date_time_array ["seconds"];
$ Month = $ date_time_array ["mon"];
$ Day = $ date_time_array ["mday"];
$ Year = $ date_time_array ["year"];
Switch ($ interval ){
Case "yyyy": $ year + = $ number; break;
Case "q": $ month + = ($ number * 3); break;
Case "m": $ month + = $ number; break;
Case "y ":
Case "d ":
Case "w": $ day + = $ number; break;
Case "ww": $ day + = ($ number * 7); break;
Case "h": $ hours + = $ number; break;
Case "n": $ minutes + = $ number; break;
Case "s": $ seconds + = $ number; break;
}
$ Timestamp = mktime ($ hours, $ minutes, $ seconds, $ month, $ day, $ year );
Return $ timestamp;
}
Function DateDiff ($ interval, $ date1, $ date2 ){
$ Timedifference = $ date2-$ date1;
Switch ($ interval ){
Case "w": $ retval = bcp ($ time difference, 604800); break;
Case "d": $ retval = bcp ($ timedifference, 86400); break;
Case "h": $ retval = bcp ($ time difference, 3600); break;
Case "n": $ retval = bcp ($ timedifference, 60); break;
Case "s": $ retval = $ timedifference; break;
}
Return $ retval;
}
}
?>

Why? See the following demo: Code: $ temptime = time (); echo strftime ("% Hh % M % A % d % B", $ temptime ); $ date = new DateAccount (); $ tempti...