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how to convert GMT to timestamp of the computer's current time

how to convert GMT to timestamp of the computer's current time# Programming - 葵花宝典

d*r2008-10-18 07:10

1 楼

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s*e2008-10-18 07:10

2 楼

如果要做这方面的研究，要学哪些科目？
多谢！

h*o2008-10-18 07:10

3 楼

suppose the I get a http response with header:
"Expires: Mon, 26 Jul 2009 05:00:00 GMT", I need to converts it to timestamp
of the computer's current time?
Thanks.

m*e2008-10-18 07:10

4 楼

ctime

timestamp

【在 h**o 的大作中提到】

: suppose the I get a http response with header:
: "Expires: Mon, 26 Jul 2009 05:00:00 GMT", I need to converts it to timestamp
: of the computer's current time?
: Thanks.

h*o2008-10-18 07:10

5 楼

I think you want me to use strptime(). and I can now get the timestamp by
using
strptime("18 Oct 2008 14:11:00", "%d %b %Y %H:%M:%S", &tm).
but how do I convert GMT time "18 Oct 2008 14:11:00 GMT"to my local
timestamp, no matter where my local computer locates?

【在 m*****e 的大作中提到】

: ctime
:
: timestamp

h*o2008-10-18 07:10

6 楼

我编了一个，没你那么复杂：但不知为何少了一个小时. 我市pacific time, 应该与
GMT 查7小时,但timezone 愣是给减了8小时. 我已经写 tm.tm_isdst = 1 了:
suppose GMT_str = "18 Oct 2008 14:11:00"
extern long timezone;
time_t GMT_2_localtimestamp(char* GMT_str){
struct tm tm;
strptime(GMT_str, "%d %b %Y %H:%M:%S", &tm);
tm.tm_isdst = 1;
time_t gm_t = mktime(&tm);
tzset();
gm_t -= timezone;
return gm_t;
}