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Full Discussion: date difference
Operating Systems Linux date difference Post 302176134 by muay_tb on Monday 17th of March 2008 12:12:40 PM
Old 03-17-2008
Quote:
Originally Posted by era
It's possible but it would help if you could say which time zone the second one is.

The standard solution would be to convert them both to a canonical format (maybe epoch, that is, seconds since Jan 1 1970) and then the problem is just how to format the result back as a human-readable time expression. In what form would you like the output?

I would use Perl or Python because they come with handy libraries which can do the grunt work for you.
at the moment the first date, NOW is using date -u (UTC) and the file names will also be UTC. At present i have created dummy files with made up time stamps.

i basically want to delete files over 3 days old in a directory using the current date as a marker...i cant use -mtime as a person may modify the file and the modified time will not be the same as the filename. So therefore i am using the filename as the second time stamp. if you follow me?

im only after the number of days between the 2 dates.

Last edited by muay_tb; 03-17-2008 at 01:25 PM..
 

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PX_DATE2STRING(3)														 PX_DATE2STRING(3)

px_date2string - Converts a date into a string.

SYNOPSIS
string px_date2string (resource $pxdoc, int $value, string $format) DESCRIPTION
Turns a date as it stored in the paradox file into human readable format. Paradox dates are the number of days since 1.1.0000. This func- tion is just for convenience. It can be easily replaced by some math and the calendar functions as demonstrated in the example below. PARAMETERS
o $pxdoc - Resource identifier of the paradox database as returned by px_new(3). o $value - Value as stored in paradox database field of type PX_FIELD_DATE. o $format - String format similar to the format used by date(3). The placeholders support by this function is a subset of those supported by date(3) (Y, y, m, n, d, j, L). RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 Turn a paradox date into a human readable form <?php $px = px_new(); /* make up a date as it could be stored in */ /* a date field of a paradox db. */ /* 700000 days since 1.1.0000. */ $days = 700000; /* Use the calendar functions to print a */ /* human readable format of the date */ echo jdtogregorian($days+1721425)." "; /* px_date2string() outputs the same */ echo px_date2string($px, $days, "n/d/Y")." "; px_delete($px); ?> The above example will output: 7/15/1917 7/15/1917 SEE ALSO
px_timestamp2string(3), jdtogregorian(3). PHP Documentation Group PX_DATE2STRING(3)
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