多维数组的一行的最大值

Question

I have a problem finding out the highest value of one row of a multidimensional array.

The array is like:

$array[$days][events]

I am looping from 1 to 31 (the days of a month) to receive the number of events on the day $days.

For the next step I need to know the highest index (value) of the events row. (Can be any number from 0 to 1293xxxx)

I have already tried count, but it just returns the number of events, not the last event index.

Answer 1

First make an array which contain each day's higher value with max() , then use max() on this new array and you're ok

$cnt = 0;
$tab = array();
while (isset($array[$cnt]))
{
    $tab[] = max($array[$cnt]);
    cnt++;
}
$maxvalue = max($tab);

EDIT: sorry i didn't understand, what i wrote will take the global hightest.

You just need to use max() on the table you want. Good luck

Answer 2

Try this

for ($i = 0; $i <= 31; $i++) {
  ksort($array[$i], SORT_NUMERIC);
  end($array[$i]);
  $events[$i] = key($events);
}