Multi-Dimensional array count in PHP

Question

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?

@MadaraUchiha a count addition inside a loop (whichever may be best) may be better, since you dont have to iterate everything. — My1
– My1, Commented Apr 27, 2018 at 8:14

bigkm · Accepted Answer · 2013-07-24 03:07:17Z

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));

Swadq · Accepted Answer · 2012-01-30 11:11:28Z

34

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

edited Jan 30, 2012 at 11:11

answered Jan 30, 2012 at 11:00

Swadq

1,8372 gold badges15 silver badges25 bronze badges

Comments

Jack M. · Accepted Answer · 2014-06-27 04:37:16Z

34

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]);

answered Jun 27, 2014 at 4:37

Jack M.

3,8045 gold badges28 silver badges36 bronze badges

5 Comments

nashwa Over a year ago

what if i have 4 dimensional array?

Mazzy Over a year ago

Excellent! @nashwa, recursive will count every element IIRC, no matter how deep

Antony Over a year ago

For me count($arr, COUNT_RECURSIVE) was sufficient but great answer as it allows more depth

Charles Wood Jun 11 at 4:15

php.net/manual/en/function.count.php for more details on the mode flag.

Charles Wood Jun 11 at 4:17

Note: COUNT_RECURSIVE appears to count keys, not values, which is why if you use it on e.g. [ [1,2,3], [], [4,5,6] ], you will get 9 instead of 6. Because this array is really [ 0=>[0=>1, 1=>2, 2=>3], 1 => [], 2 =>[0=>4,1=>5,2=>6] ] This is why OP here recommends subtracting count($mainArr).

xhdix · Accepted Answer · 2014-10-17 11:38:43Z

3

:)

$test = array (
    array (
        'test','test','test'
    ),
    array (
    'test','test'
    ),
    array (
        array (
        'test'
        ),
        array (
        'test','test','test','test'
        )
    )
 );
 echo "  array count ". count($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 7

array count 5

array count 4

edited Oct 17, 2014 at 11:38

answered Oct 17, 2014 at 10:48

xhdix

1551 silver badge7 bronze badges

Comments

Vyktor · Accepted Answer · 2012-01-30 11:05:18Z

2

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

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

edited Jan 30, 2012 at 11:05

answered Jan 30, 2012 at 10:59

Vyktor

21.1k6 gold badges69 silver badges98 bronze badges

2 Comments

Maxime Pacary Over a year ago

This should work, but your variable naming is really confusing (confused?)

Vyktor Over a year ago

@FrostyZ I had misspell there, fixed, I've also prefixed $type so it'll be clearer what's in them.

Kirk Hammett · Accepted Answer · 2024-02-02 14:21:39Z

0

You can try using array_walk_recursive()

$totalTickets = 0;

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

answered Feb 2, 2024 at 14:21

Kirk Hammett

6708 silver badges26 bronze badges

Comments

ino · Accepted Answer · 2024-10-15 08:19:20Z

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

Saiful Islam · Accepted Answer · 2017-12-15 17:17:11Z

-1

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;

answered Dec 15, 2017 at 17:17

Saiful Islam

3506 silver badges15 bronze badges

1 Comment

Dalibor Karlović Over a year ago

Don't do a inner foreach loop just to obtain a count of elements.

Collectives™ on Stack Overflow

Multi-Dimensional array count in PHP

8 Answers 8

Comments

Comments

5 Comments

Comments

2 Comments

Comments

Comments

1 Comment

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

8 Answers 8

Comments

Comments

5 Comments

Comments

2 Comments

Comments

Comments

1 Comment

Your Answer

Sign up or log in

Post as a guest

Linked

Related