checking array with previous value in array

Question

I have an time array and the frequency of reading is 5 seconds

I want to check if the frequency of reading is 5 second between every element of

array

My code

$freq_of_reading = 5;
$res_arr = array(
    0 => array("13:53:45"),
    1 => array("13:53:50"),
    2 => array("13:53:55"),
    3 => array("13:54:00"),
    4 => array("13:54:05"),
    5 => array("13:54:10"),
    6 => array("13:54:15"),
    7 => array("13:54:20"),
    8 => array("13:54:25"),
    9 => array("13:54:30"),
);


try {
    $u = 0;
    foreach ($res_arr as $key => $item) {
        // if(strtotime($item))
        //Logic here 
    }
} catch (Exception $e) {
    echo $exp = $e->getMessage();
}

What have you tried, what result are you currently getting, and what is the desired result? You haven't given us enough information to help you. — snollygolly
– snollygolly, Commented Feb 19, 2014 at 18:47
It seems that he want to check if the frequency of reading is correct all over the array. — rusben
– rusben, Commented Feb 19, 2014 at 18:52

José Antonio Postigo · Accepted Answer · 2014-02-19 18:59:48Z

1

Try this loop:

for($i = 0; $i < count($res_arr) - 1; $i++)
{
    if(strtotime($res_arr[$i + 1][0]) - strtotime($res_arr[$i][0]) != $freq_of_reading)
    {
        echo "Element $i differs from the next one more than $freq_of_reading s";
        exit;
    }    
}

answered Feb 19, 2014 at 18:59

José Antonio Postigo

3,02430 silver badges25 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Nishant Solanki · Accepted Answer · 2014-02-19 18:53:23Z

0

try this code

$count = count($res_arr);
for($i=0;$i<$count$i++)
    {
        $number = intval(substr($res_arr[$i], -2));

        $number1 = substr(($res_arr[$i+1], -2));
        if(($number1-$number) == 5)
        {
          echo "true";
        }

    }

answered Feb 19, 2014 at 18:53

Nishant Solanki

2,1283 gold badges19 silver badges32 bronze badges

Comments

AbraCadaver · Accepted Answer · 2014-02-19 18:53:27Z

0

Not sure why that's in a try, but:

$freq_of_reading = 5;
$previous = 0;

foreach($res_arr as $item) {
    $time = strtotime($item[0]);
    if($time - $freq_of_reading == $previous) {
        echo 'yes';
    }
    $previous = $time;
}

answered Feb 19, 2014 at 18:53

AbraCadaver

79.2k7 gold badges75 silver badges91 bronze badges

Collectives™ on Stack Overflow

checking array with previous value in array

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related