How can I use PHP to compute the difference between two dates(with time)? Let's say in mysql, I have field 1, login, and on field 2, I have logout.
How can I compute the diffrence between login and logut and output it on field 3 let's say totaltime.
Is this a mysql question? Or can PHP actually do this?
TIA
Both can do it, but it depends heavily on what type of date format it is. If it's a normal mysql date or datetime (not a timestamp) then you can grab it, then do:
$seconds = strtotime($field1) - strtotime($field2);
strtotime() does a good job of converting just about every type of formatted date.
If you're using a timestamp, there aren't any deliminators. I'm not sure if strtotime() will parse those as you want. In this case (and the other, actually) you can easily use SQL.
SELECT UNIX_TIMESTAMP(field1) - UNIX_TIMESTAMP(field2) AS secondsBetween FROM table
-- paperCrane <Justin Patrin>
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