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date difference
Post 302176124 by muay_tb on Monday 17th of March 2008 11:38:20 AM
03-17-2008
at present i have this:
for file in `find ${my_dir}/ -name "*_statsfile_??????????????.gz" -print`
do
ONEDAY=86400
NOW=$(date -u +%Y%m%d%H%M%S)
FILEDATE=`echo $file | sed -e 's/^.*_stats_//g' -e 's/\.gz$//g'`
((DIFF=$NOW - $FILEDATE))
CALC_DIFF=$(($DIFF / $ONEDAY))
echo "[$file], Current Time: $NOW. File Time: $FILEDATE. Difference: $CALC_DIFF."
done
both dates need to be in UTC. Is there a way to make them BOTH UTC. the date 'NOW' is UTC but the 'FILEDATE' isnt.
for file in `find ${my_dir}/ -name "*_statsfile_??????????????.gz" -print`
do
ONEDAY=86400
NOW=$(date -u +%Y%m%d%H%M%S)
FILEDATE=`echo $file | sed -e 's/^.*_stats_//g' -e 's/\.gz$//g'`
((DIFF=$NOW - $FILEDATE))
CALC_DIFF=$(($DIFF / $ONEDAY))
echo "[$file], Current Time: $NOW. File Time: $FILEDATE. Difference: $CALC_DIFF."
done
both dates need to be in UTC. Is there a way to make them BOTH UTC. the date 'NOW' is UTC but the 'FILEDATE' isnt.
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LEARN ABOUT PHP
datetime.createfromformat
DATETIME.CREATEFROMFORMAT(3) 1 DATETIME.CREATEFROMFORMAT(3) DateTime::createFromFormat - Returns new DateTime object formatted according to the specified format Object oriented style SYNOPSIS
publicstatic DateTime DateTime::createFromFormat (string $format, string $time, [DateTimeZone $timezone]) DESCRIPTION
Procedural style DateTime date_create_from_format (string $format, string $time, [DateTimeZone $timezone]) Returns new DateTime object formatted according to the specified format. PARAMETERS
o $format - The format that the passed in string should be in. See the formatting options below. In most cases, the same letters as for the date(3) can be used. The following characters are recognized in the $format parameter string +--------------------------+--------------------------------------+---+ | $format character | | | | | | | | | Description | | | | | | | | Example parsable values | | | | | | +--------------------------+--------------------------------------+---+ | | | | | Day | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | d and j | | | | | | | | | Day of the month, 2 digits with or | | | | without leading zeros | | | | | | | | | | | | 01 to 31 or 1 to 31 | | | | | | | | | | | D and l | | | | | | | | | A textual representation of a day | | | | | | | | | | | | Mon through Sun or Sunday through | | | | Saturday | | | | | | | | | | | S | | | | | | | | | English ordinal suffix for the day | | | | of the month, 2 characters. It's | | | | ignored while processing. | | | | | | | | | | | | st, nd, rd or th. | | | | | | | | | | | z | | | | | | | | | The day of the year (starting from | | | | 0) | | | | | | | | | | | | 0 through 365 | | | | | | | | | | | Month | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | F and M | | | | | | | | | A textual representation of a month, | | | | such as January or Sept | | | | | | | | | | | | January through December or Jan | | | | through Dec | | | | | | | | | | | m and n | | | | | | | | | Numeric representation of a month, | | | | with or without leading zeros | | | | | | | | | | | | 01 through 12 or 1 through 12 | | | | | | | | | | | Year | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | Y | | | | | | | | | A full numeric representation of a | | | | year, 4 digits | | | | | | | | Examples: 1999 or 2003 | | | | | | | | | | | y | | | | | | | | | A two digit representation of a | | | | year (which is assumed to be in the | | | | range 1970-2069, inclusive) | | | | | | | | Examples: 99 or 03 (which will be | | | | interpreted as 1999 and 2003, | | | | respectively) | | | | | | | | | | | Time | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | a and A | | | | | | | | | Ante meridiem and Post meridiem | | | | | | | | | | | | am or pm | | | | | | | | | | | g and h | | | | | | | | | 12-hour format of an hour with or | | | | without leading zero | | | | | | | | | | | | 1 through 12 or 01 through 12 | | | | | | | | | | | G and H | | | | | | | | | 24-hour format of an hour with or | | | | without leading zeros | | | | | | | | | | | | 0 through 23 or 00 through 23 | | | | | | | | | | | i | | | | | | | | | Minutes with leading zeros | | | | | | | | | | | | 00 to 59 | | | | | | | | | | | s | | | | | | | | | Seconds, with leading zeros | | | | | | | | | | | | 00 through 59 | | | | | | | | | | | u | | | | | | | | | Microseconds (up to six digits) | | | | | | | | Example: 45, 654321 | | | | | | | | | | | Timezone | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | e, O, P and T | | | | | | | | | Timezone identifier, or difference | | | | to UTC in hours, or difference to | | | | UTC with colon between hours and | | | | minutes, or timezone abbreviation | | | | | | | | Examples: UTC, GMT, Atlantic/Azores | | | | or +0200 or +02:00 or EST, MDT | | | | | | | | | | | Full Date/Time | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | U | | | | | | | | | Seconds since the Unix Epoch (Janu- | | | | ary 1 1970 00:00:00 GMT) | | | | | | | | Example: 1292177455 | | | | | | | | | | |Whitespace and Separators | | | | | | | | | --- | | | | | | | | --- | | | | | | | | | | | (space) | | | | | | | | | One space or one tab | | | | | | | | Example: | | | | | | | | | | | # | | | | | | | | | One of the following separation | | | | symbol: ;, :, /, ., ,, -, ( or ) | | | | | | | | Example: / | | | | | | | | | | |;, :, /, ., ,, -, ( or ) | | | | | | | | | The specified character. | | | | | | | | Example: - | | | | | | | | | | | ? | | | | | | | | | A random byte | | | | | | | | Example: ^ (Be aware that for UTF-8 | | | | characters you might need more than | | | | one ?. In this case, using * is | | | | probably what you want instead) | | | | | | | | | | | * | | | | | | | | | Random bytes until the next separa- | | | | tor or digit | | | | | | | | Example: * in Y-*-d with the string | | | | 2009-aWord-08 will match aWord | | | | | | | | | | | ! | | | | | | | | | Resets all fields (year, month, day, | | | | hour, minute, second, fraction and | | | | timzone information) to the Unix | | | | Epoch | | | | | | | | Without !, all fields will be set to | | | | the current date and time. | | | | | | | | | | | | | | | | | | | | | Resets all fields (year, month, day, | | | | hour, minute, second, fraction and | | | | timzone information) to the Unix | | | | Epoch if they have not been parsed | | | | yet | | | | | | | | | | | | Y-m-d| will set the year, month and | | | | day to the information found in the | | | | string to parse, and sets the hour, | | | | minute and second to 0. | | | | | | | | | | | + | | | | | | | | | If this format specifier is present, | | | | trailing data in the string will not | | | | cause an error, but a warning | | | | instead | | | | | | | | Use DateTime::getLastErrors to find | | | | out whether trailing data was | | | | present. | | | | | | +--------------------------+--------------------------------------+---+ Unrecognized characters in the format string will cause the parsing to fail and an error message is appended to the returned struc- ture. You can query error messages with DateTime::getLastErrors. If $format does not contain the character ! then portions of the generated time which are not specified in $format will be set to the current system time. If $format contains the character !, then portions of the generated time not provided in $format, as well as values to the left-hand side of the !, will be set to correspond- ing values from the Unix epoch. The Unix epoch is 1970-01-01 00:00:00 UTC. o $time - String representing the time. o $timezone - A DateTimeZone object representing the desired time zone. If $timezone is omitted and $time contains no timezone, the current timezone will be used. Note The $timezone parameter and the current timezone are ignored when the $time parameter either contains a UNIX timestamp (e.g. 946684800) or specifies a timezone (e.g. 2010-01-28T15:00:00+02:00). RETURN VALUES
Returns a new DateTime instance or FALSE on failure. EXAMPLES
Example #1 DateTime.createFromFormat(3) example Object oriented style <?php $date = DateTime::createFromFormat('j-M-Y', '15-Feb-2009'); echo $date->format('Y-m-d'); ?> Procedural style <?php $date = date_create_from_format('j-M-Y', '15-Feb-2009'); echo date_format($date, 'Y-m-d'); ?> The above examples will output: 2009-02-15 Example #2 Intricacies of DateTime.createFromFormat(3) <?php echo 'Current time: ' . date('Y-m-d H:i:s') . " "; $format = 'Y-m-d'; $date = DateTime::createFromFormat($format, '2009-02-15'); echo "Format: $format; " . $date->format('Y-m-d H:i:s') . " "; $format = 'Y-m-d H:i:s'; $date = DateTime::createFromFormat($format, '2009-02-15 15:16:17'); echo "Format: $format; " . $date->format('Y-m-d H:i:s') . " "; $format = 'Y-m-!d H:i:s'; $date = DateTime::createFromFormat($format, '2009-02-15 15:16:17'); echo "Format: $format; " . $date->format('Y-m-d H:i:s') . " "; $format = '!d'; $date = DateTime::createFromFormat($format, '15'); echo "Format: $format; " . $date->format('Y-m-d H:i:s') . " "; ?> The above example will output something similar to: Current time: 2010-04-23 10:29:35 Format: Y-m-d; 2009-02-15 10:29:35 Format: Y-m-d H:i:s; 2009-02-15 15:16:17 Format: Y-m-!d H:i:s; 1970-01-15 15:16:17 Format: !d; 1970-01-15 00:00:00 SEE ALSO
DateTime.__construct(3), DateTime.getLastErrors(3), checkdate(3), strptime(3). PHP Documentation Group DATETIME.CREATEFROMFORMAT(3)