Question

I have an array which looks something like this:

array(-2, -1, 0, 1, 2, 3, 4)

I would like to count the number of negative numbers only. I can’t spot where it says how to do this in the manual, is there no function to do this? Do I have to create a loop to go through the array manually?

Answer 1

Do I have to create a loop to go through the array manually?

Yes, you have to do it manually by easily doing:

function count_negatives(array $array) {
    $i = 0;
    foreach ($array as $x)
        if ($x < 0) $i++;
    return $i;
}

At the end of the script $i will contain the number of negative numbers.