:)
Perfect! Thank you.
On Thu, Aug 2, 2012 at 1:25 PM, Robert Williams <rewilli...@thesba.com> wrote:
> On 8/2/12 05:51, "Paul Halliday" <paul.halli...@gmail.com> wrote:
>
>
>>What I have is an array of values and timestamps:
>>
>>17 15:31
>>16 15:32
>>27 15:33
>>14 15:34
>>11 15:35
>>
>>now for a day I should have 1440 entries but there could be spotty
>>results, no data from say 11:59 -> 13:00.
>>What I need is to sum the values for each hour interval.
>
> I may be misinterpreting what you're asking, but what about something like
> this:
>
> $times = array(
> 17 => '15:31',
> 16 => '15:32',
> 27 => '15:33',
> 14 => '15:34',
> 11 => '15:35',
> 27 => '16:33',
> 14 => '17:34',
> 11 => '11:35',
> 11 => '11:36',
> );
>
> $sums = array_fill(0, 24, 0);
>
> foreach ($times as $value => $time) {
> $sums[substr($time, 0, 2)] += (integer)$value;
> }
>
> print_r($sums);
>
> This produces:
>
>
> /usr/bin/php /Volumes/Dev/Sites/playground/play4.php
> Array
> (
> [0] => 0
> [1] => 0
> [2] => 0
> [3] => 0
> [4] => 0
> [5] => 0
> [6] => 0
> [7] => 0
> [8] => 0
> [9] => 0
> [10] => 0
> [11] => 11
> [12] => 0
> [13] => 0
> [14] => 0
> [15] => 33
> [16] => 27
> [17] => 14
> [18] => 0
> [19] => 0
> [20] => 0
> [21] => 0
> [22] => 0
> [23] => 0
> )
>
> Process finished with exit code 0
>
>
>
> --
> Robert E. Williams, Jr.
> Associate Vice President of Software Development
> Newtek Businesss Services, Inc. -- The Small Business Authority
> https://www.newtekreferrals.com/rewjr
> http://www.thesba.com/
>
>
>
>
>
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