Multi-Dimensional array count in PHP

Question

I have a multi-dimentional array set up as follows

array() {
    [\"type1\"] =>
    array() {
        [\"ticket1\"] =>
        array(9) { 
                    


        

Answer 1

A bit late but this is a clean way to write it.

$totalTickets = array_sum(array_map("count", $tickets));

Assuming $tickets is your multi-dimensional array.

I've expanded the code to give an explained example because array_map might be new to some

$tickets = array(
    "type1" => array(
        "ticket1" => array(),
        "ticket2" => array(),
        "ticket3" => array(),
    ),
    "type2" => array(
        "ticket4" => array(),
        "ticket5" => array(),
        "ticket6" => array(),
        "ticket7" => array(),
    ),
    "type3" => array(
        "ticket8" => array()
    )
);

// First we map count over every first level item in the array
// giving us the total number of tickets for each type.
$typeTotals = array_map("count", $tickets);

// print_r($typeTotals);
// $type_totals --> Array (
//                       [type1] => 3,
//                       [type2] => 4,
//                       [type3] => 1 
//                  )

//Then we sum the values of each of these
$totalTickets = array_sum($typeTotals);

print($totalTickets);
// $totalTickets --> 8

So because we don't care about the intermediate result of each type we can feed the result into array_sum

$totalTickets = array_sum(array_map("count", $tickets));