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Calculating the difference between two dates


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These look like timestamps returned from a MySQL database? If so, do it in SQL, it's quite a bit faster.


Generally, the best way to do this is to get the UNIX_TIMESTAMP of each date so you can get the difference in seconds, then use simple arithmetic to determine if you want to show how many hours/days/etc difference there is.


SELECT UNIX_TIMESTAMP(`date1`) as `date1_stamp`, UNIX_TIMESTAMP(`date2`) as `date2_stamp` FROM `table`

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