foreach - return the highest value

Question

I have a foreach loop in php.

Loop will return 4 diffirent values and i want to display the highest from it.

Specifically, my loop will return array with date and temperature for that day.

The example code for indication:

foreach ($variable as $key => $value) {
    $temperature = temprature();
    $date = date();

    $teploty[$date] = $teplota;

    if(!isset($teploty[$date]) > -50) {
      $teploty[$date] = $teplota;
    }
}

Answer 1

Your code is confusing. This is how you find the highest value in an array of numbers:

$highest = null;
foreach ($numbers as $num) {
    if (is_null($highest) || $num > $highest) {
        $highest = $num;
    }
}

You should be able to adapt this pattern to your code and data.