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Difference(Datetime) Averages


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First off...Hi everyone, I'm hoping you all can help.


I'm working on a script that stores datetimes of users logging in and out of a system. I've found out how to get the time the user was logged in using the following code.


$monthsVisitors = mysql_query($q);

while($row = mysql_fetch_array($monthsVisitors)) {
 $timeIn = $row['timeIn'];
 $timeOut = $row['timeOut'];
 $timeDiff = dateDiff($timeOut, $timeIn);


Assuming I store hundreds of entries in the "Visitor" table, with each row containing a "timeIn" and "timeOut". What would be the best way to get an average of "$timeDiff"?

Edited by jakzodiac
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Okay, that worked. It returns the following.




When the query returns this value, can it be formatted? I tried to apply different datetime formats and couldn't get any to work. Is this because it is returned as a variable?


Lastly, thank you for the help so far. Way more helpful than stackexchange. They kept turning down my questions.

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