Stock mktime stock timestamp_to_date

[Pukanus_Razorvanus]

у меня в моде такая неоптимальная система времени!

вот строки

stock timestamp_to_date
(
	unix_timestamp = 0,

	& year = 1970,		& month  = 1,		& day    = 1,
	& hour =    0,		& minute = 0,		& second = 0
)
{
	year = unix_timestamp / 31536000;
	unix_timestamp -= year * 31536000;
	year += 1970;

    new days_of_month[12];

	if ( ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0) ) {
			days_of_month = {31,29,31,30,31,30,31,31,30,31,30,31};
		} else {
			days_of_month = {31,28,31,30,31,30,31,31,30,31,30,31};
		}
	if(month > 1) {
		for(new i=0; i<month-1;i++) {
			unix_timestamp -= days_of_month[i];
		}
	}

	day = unix_timestamp / 86400;

	switch ( day )
	{
		case    0..30 : { second = day;       month =  1; }
		case   31..58 : { second = day -  31; month =  2; }
		case   59..89 : { second = day -  59; month =  3; }
		case  90..119 : { second = day -  90; month =  4; }
		case 120..150 : { second = day - 120; month =  5; }
		case 151..180 : { second = day - 151; month =  6; }
		case 181..211 : { second = day - 181; month =  7; }
		case 212..242 : { second = day - 212; month =  8; }
		case 243..272 : { second = day - 243; month =  9; }
		case 273..303 : { second = day - 273; month = 10; }
		case 304..333 : { second = day - 304; month = 11; }
		case 334..366 : { second = day - 334; month = 12; }
	}

	unix_timestamp -= day * 86400;
	hour = unix_timestamp / 3600;

	unix_timestamp -= hour * 3600;
	minute = unix_timestamp / 60;

	unix_timestamp -= minute * 60;
	day = second;
	second = unix_timestamp;
}

stock mktime(hour,minute,second,day,month,year)
{
	new timestamp2;

	timestamp2 = second + (minute * 60) + (hour * 3600);

	new days_of_month[12];

	if ( ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0) ) {
			days_of_month = {31,29,31,30,31,30,31,31,30,31,30,31};
		} else {
			days_of_month = {31,28,31,30,31,30,31,31,30,31,30,31};
		}
	new days_this_year = 0;
	days_this_year = day;
	if(month > 1) {
		for(new i=0; i<month-1;i++) {
			days_this_year += days_of_month[i];
		}
	}
	timestamp2 += days_this_year * 86400;

	for(new j=1970;j<year;j++) {
		timestamp2 += 31536000;
		if ( ((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0) )  timestamp2 += 86400;
	}

	return timestamp2;
}

на что заменить эти строки? инклуд какой нибуть? подробнее обесните пажалуста