CODEWITHSUNDEEP
phpmultidimensional-array
Kit Barnes
Kit Barnes

Reputation: 785

Multi-Dimensional array count in PHP

I have a multi-dimentional array set up as follows 

array() {
    ["type1"] =>
    array() {
        ["ticket1"] =>
        array(9) { 
           // ticket details here
        }
        ["ticket2"] =>
        array(10) { 
           // ticket details here
        }
        ["ticket3"] =>
        array(9) { 
           // ticket details here
        }
    }
    ["type2"] =>
    array() {
        ["ticket1"] =>
        array(9) { 
           // ticket details here
        }
        ["ticket2"] =>
        array(10) { 
           // ticket details here
        }
        ["ticket3"] =>
        array(9) { 
           // ticket details here
        }
    }
}

etc.

I am trying to get a count of the total number of tickets in the array (number of second level items), but the number of types is variable as are the number of fields that each ticket has, so I cannot use COUNT_RECURSIVE and maths to get the number.

Can anyone help me?

Upvotes: 37

Views: 99575

Answers (8)

ino
ino

Reputation: 2591

For those who reach this topic and needs to Count items in multi-dimensional Object...

1. Convert Object to Array
The Object must be first converted into an Array, here do it in two steps using PHP build in functions to convert the Object into JSON string using json_encode() and then decode the JSON string back to the Array using json_decode() with second parameter set to true make the response an associative array.

2. Count items in the Array
Count the multi-dimensional array as bigkm's answer did it in three steps, ie using array_map() that calls count() function to count items and finally array_sum() functions to sum the counted items.

All five steps as liner is:

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

Note: all nested levels must be of type Countable|array otherwise an Fatal error is triggered by count() function.

I will use approach posted by bigkm's answer.

// The object of tickets
$tickets = new StdClass;
$tickets->type1 = new StdClass;
$tickets->type1->ticket1 = new StdClass;
$tickets->type1->ticket2 = new StdClass;
$tickets->type1->ticket3 = new StdClass;

$tickets->type2 = new StdClass;
$tickets->type2->ticket4 = new StdClass;
$tickets->type2->ticket5 = new StdClass;
$tickets->type2->ticket6 = new StdClass;
$tickets->type2->ticket7 = new StdClass;

$tickets->type3 = new StdClass;
$tickets->type3->ticket8 = new StdClass;

// Convert the multi-dimensional Object into Array through JSON conversions
$ticketsArray = json_decode(json_encode($tickets), true);

// Finally count items using 
$totalTickets = array_sum(array_map("count", $ticketsArray ));

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

// or one liner
$totalTickets = array_sum(array_map("count", json_decode(json_encode($tickets), true)));

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

Upvotes: 0

Kirk Hammett
Kirk Hammett

Reputation: 672

You can try using array_walk_recursive()

$totalTickets = 0;

array_walk_recursive($tickets, function($item) use (&$totalTickets) {
    $totalTickets++;
});

Upvotes: 0

Saiful Islam
Saiful Islam

Reputation: 350

To count total number of Ticket, this bellow code will help you for PHP.

foreach($mainArray as $Array){
    foreach($Array as $perTicke){
        $count++;
    }
}
$total_ticket = $count;

Upvotes: -1

xhdix
xhdix

Reputation: 155

:)

$test = array (
    array (
        'test','test','test'
    ),
    array (
    'test','test'
    ),
    array (
        array (
        'test'
        ),
        array (
        'test','test','test','test'
        )
    )
 );
 echo "  array count ". count($test[0]) ." <br /> ";
 echo "  array count ". count($test[1]) ." <br /> ";
 echo "  array count ". count($test[2]) ." <br /> ";
 echo "  array count ". count($test[2],1) ." <br /> ";
 echo "  array count ". (count($test[2],1) - count($test[2])) ." <br /> "; // all child num - parent num
 echo "  array count ". count($test[2][1]) ." <br /> ";

output:

array count 3

array count 2

array count 2

array count 7

array count 5

array count 4

Upvotes: 3

Jack M.
Jack M.

Reputation: 3804

Use Count Recursive and subtract the First level count, like this:

count($mainArr, COUNT_RECURSIVE) - count($mainArr);

If your array has +3 levels, just add [?] keys:

count($mainArr[1], COUNT_RECURSIVE) - count($mainArr[1]);

Upvotes: 34

bigkm
bigkm

Reputation: 2277

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));

Upvotes: 75

Swadq
Swadq

Reputation: 1837

$count = 0;
foreach ($array as $type) {
    $count+= count($type);
}

Upvotes: 34

Vyktor
Vyktor

Reputation: 21007

The easiest way to do this is one simple foreach loop:

$count = 0;
foreach( $tickets as $ticketType){
    $count += count( $ticketType);
}

Upvotes: 2

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