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(hours minutes) to seconds to (hours minutes)

Posted on 2013-05-22
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Last Modified: 2013-05-22
a user is entering time in an input textbox which gets saved into mysql and then displayed in the input textbox again

hours minutes in this format:
h:i

6:05


want to convert
to seconds mysql format int

and then back into
h:i

how to do the two conversions


is there a better way to do this
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Question by:rgb192
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3 Comments
 
LVL 15

Accepted Solution

by:
Jagadishwor Dulal earned 350 total points
ID: 39186963
If you are fetching h:i from database you can convert it to second using query like:
SELECT TIME_TO_SEC('05:10');

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To convert again to h:i:s see the function:
<?php
function convertTime($seconds)
{
    $ret = "";
    $hours = intval(intval($seconds) / 3600);
    if($hours > 0)
    {
        $ret .= "$hours:";
    }
    $minutes = bcmod((intval($seconds) / 60),60);
    if($hours > 0 || $minutes > 0)
    {
        $ret .= "$minutes:";
    }
    $seconds = bcmod(intval($seconds),60);
    $ret .= "$seconds";
    return $ret;
}
echo convertTime('18600');
?>

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0
 
LVL 7

Assisted Solution

by:Robert Saylor
Robert Saylor earned 150 total points
ID: 39187126
convert the time to epoch then back using the date function. Calculating epoch is the easiest way with time. It is already a base number and you can easily add/subtract. MySQL also supports formatting the date in your select string.
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Author Closing Comment

by:rgb192
ID: 39188498
i like the conversion example better

thanks
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