php find 3 consecutive dates in array

Question

i have this code to find 3 consecutive dates in an array but i'm wondering if there is a better way to do this?

php code:

$datesarray = array('2012-10-01', '2012-10-03', '2012-10-04', '2012-10-05', '2012-10-08', '2012-10-09');

    $count = 0;
    $result = "Nothing found";

        foreach ($datesarray as $value) {
            if(strtotime($datesarray[$count]) - strtotime($datesarray[$count-1]) - strtotime($datesarray[$count-2]) == -1349150400) {
                $result = "3 Consecutive dates found";
            }
        $count++; 
        }  

    echo "Result: $result";

Wrong forum. Should be in code review instead.

Aziz Saleh
– Aziz Saleh

2014-05-07 18:01:52 +00:00
Commented May 7, 2014 at 18:01 — Aziz Saleh
– Aziz Saleh, Commented May 7, 2014 at 18:01

Marcin Nabiałek · Accepted Answer · 2014-05-07 18:16:19Z

1

Your script gives me:

Result: Nothing found

but there are 3 consecutive dates

I've changed the script:

<?php

$datesarray = array('2012-10-01', '2012-10-03', '2012-10-04', '2012-10-05', '2012-10-08', '2012-10-09');

$result = "Nothing found";


$diff = strtotime('2014-05-07') - strtotime('2014-05-06');

for ($i=2, $c=count($datesarray); $i<$c; ++$i) {
    if (strtotime($datesarray[$i-1]) - strtotime($datesarray[$i-2]) == $diff &&
        strtotime($datesarray[$i]) - strtotime($datesarray[$i-2]) == $diff * 2) {
            $result = "3 Consecutive dates found";                
            break;
    }

}
echo "Result: $result";

and the result is

Result: 3 Consecutive dates found

Is this what you expected?

edited May 7, 2014 at 18:16

answered May 7, 2014 at 17:55

Marcin Nabiałek

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2 Comments

rubberchicken Over a year ago

mine shows Result: 3 Consecutive dates found... not sure why you got Nothing found with my code....

Marcin Nabiałek Over a year ago

I have also warning in your script because in your foreach you check also not existing elements. On my PC in your script I have values 1349042400, 172800, -1348956000, -1349128800, -1349042400, -1349301600 in comparison

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