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countBir dizideki eleman sayısını veya bir nesnedeki özellik sayısını döndürür


int count ( mixed $girdi [, int $kip = COUNT_NORMAL ] )

Bir dizideki eleman sayısını veya bir nesnedeki özellik sayısını döndürür.

Nesneler için, eğer SPL kuruluysa Countable tarafından gerçeklenen count() yöntemini sonucu almak için kullanabilirsiniz. Nesne arayüzü sadece bir yönteme, count() işlevinden dönen değeri döndüren count() yöntemine sahiptir.

PHP'de kullanılan dizilerin nasıl gerçeklendiği ile ilgili daha ayrıntılı bilgi edinmek için array sayfasına bakınız.



Dizi veya nesne.


İsteğe bağlı kip değiştirgesine COUNT_RECURSIVE (veya 1) atanırsa, count() işlevi diziyi ardışık olarak sayar. Böylece çok boyutlu bir dizinin bütün elemanları sayılabilir. count() sonsuz iç içeliği algılayacak yetenekte değildir.

Dönen Değerler

Bir dizi dışında her şey tek elemanlı bir dizi kabul edilebileceğinden işlev daima girdi'deki eleman sayısını döndürür.

Eğer girdi array veya object türünde değilse Countable arayüzü, 1 döndürür. Tek istisnası girdi'nin NULL olması durumu olup böyle bir durumda 0 döner.


count() işlevi atanmamış bir değişken için 0 döndürebilir, fakat değişken boş bir dizi ile ilklendirilmişse de 0 döndürecektir. Değişkenin tanımlı olup olmadığını isset() ile sınayabilirsiniz.

Sürüm Bilgisi

Sürüm: Açıklama
4.2.0 İsteğe bağlı kip değiştirgesi eklendi.


Örnek 1 - count() örneği

[0] = 1;
$a[1] = 3;
$a[2] = 5;
$sonuç count($a);
// $sonuç == 3

$b[0]  = 7;
$b[5]  = 9;
$b[10] = 11;
$sonuç count($b);
// $sonuç == 3

$sonuç count(null);
// $sonuç == 0

$sonuç count(false);
// $sonuç == 1

Örnek 2 - Ardışık count() örneği

= array('fruits' => array('orange''banana''apple'),
'veggie' => array('carrot''collard''pea'));

// ardışık sayım
echo count($foodCOUNT_RECURSIVE); // 8

// normal sayım
echo count($food); // 2


Ayrıca Bakınız

  • is_array() - Değişkenin bir dizi içerip içermediğine bakar
  • isset() - Değişken tanımlı mı diye bakar
  • strlen() - Dizge uzunluğunu döndürür

add a note add a note

User Contributed Notes 20 notes

onlyranga at gmail dot com
2 years ago
If you want to run through large arrays don't use count() function in the loops , its a over head in performance,  copy the count() value into a variable and use that value in loops for a better performance.


// Bad approach

    // calculations

// Good approach

$arr_length = count($some_arr);
    // calculations
1 year ago
As I see in many codes, don't use count to iterate through array.
Onlyranga says you could declare a variable to store it before the for loop.
I agree with his/her approach, using count in the test should be used ONLY if you have to count the size of the array for each loop.

You can do it in the for loop too, so you don't have to "search" where the variable is set.
= [1, 5, 'element'];
$i = 0, $c = count($array); $i < $c; $i++)
array at from dot pl
1 year ago
onlyranga at gmail dot com note about keeping count() in variable is not really correct, For some time now using variable and calling `count()` on each loop iteration costs you basically the same.

Proof: If you look into PHP sources then you see that for some time now it returns internal counter value instead of counting on each call. Here is `count` implementation: [1] where for array it calls `php_count_recursive` [2] which is then calls zend_hash_num_elements and returns `nNumOfElements` internal variable. It is not counting anything.

You may want to read this blog post about PHP internals too:

alexandr at vladykin dot pp dot ru
9 years ago
My function returns the number of elements in array for multidimensional arrays subject to depth of array. (Almost COUNT_RECURSIVE, but you can point on which depth you want to plunge).

function getArrCount ($arr, $depth=1) {
      if (!
is_array($arr) || !$depth) return 0;
      foreach (
$arr as $in_ar)
$res+=getArrCount($in_ar, $depth-1);
Gerd Christian Kunze
2 years ago
Get maxWidth and maxHeight of a two dimensional array..?

1st dimension = Y (height)
2nd dimension = X (width)
e.g. rows and cols in database result arrays

= array( 0 => array( 'key' => 'value', ...), ... );

So for Y (maxHeight)
= count( $TwoDimensionalArray )

And for X (maxWidth)
= max( array_map( 'count'$TwoDimensionalArray ) );

Simple? ;-)
danny at dannymendel dot com
8 years ago
I actually find the following function more useful when it comes to multidimension arrays when you do not want all levels of the array tree.

// $limit is set to the number of recursions
function count_recursive ($array, $limit) {
$count = 0;
    foreach (
$array as $id => $_array) {
        if (
is_array ($_array) && $limit > 0) {
$count += count_recursive ($_array, $limit - 1);
        } else {
$count += 1;
ayyappan dot ashok at gmail dot com
1 month ago
/** Count of objects */

class ABC{ }
$objecto = new ABC();
$total = count((array)$object); //Returns Zero.
$total = count($object); //Returns One
echo $total;
11 months ago
A function of one line to find the number of elements that are not arrays, recursively :

function count_elt($array, &$count=0){
  foreach($array as $v) if(is_array($v)) count_elt($v,$count); else ++$count;
  return $count;
atoi_monte at hotmail dot com
8 years ago
Please note: While SPL is compiled into PHP by default starting with PHP 5, the Countable interface is not available until 5.1
semmelbroesel at gmail dot com
2 years ago
I've read this somewhere else before, but experienced it first hand now, so I thought I'd post it here.

While in regular use, count() is pretty fast, this changes rapidly when used in a for loop. Example:

for ($x = 0; $x < count($array); $x++)
  // some code here

If your array contains a lot of data, this code gets slowed down significantly. Better way to write this:

$arrayCount = count($array);
for ($x = 0; $x < $arrayCount; $x++)
  // some code here

I didn't think it would make such a difference, but it did in my case - changed 15 seconds load time into 1 second!
jezdec at email dot cz
7 years ago
Hi there,
there is a simple script with example for counting rows and columns of a two-dimensional array.

= array(
"apples" =>
"red", "yellow", "pineapples"),
"bananas" =>
"small", "medium", "big"),
"vegs" =>
"potatoes", "carrots", "onions")

$rows = count($data,0);
$cols = (count($data,1)/count($data,0))-1;
"There are {$rows} rows and {$cols} columns in the table!";
pjrfigueiredo at gmail dot com
10 months ago
PHP - count an object returns 1?
This is how: $total = count((array)$objecto);
2 years ago
If you want to check whether large arrays contain a specific (less) number of array elements, don't use count(). This is very slow because each element has to get iterated.

This is much faster:

function isArrayCount(array $array, $count) {
    $count = (int) $count;
    $result = reset($array);
    if ($count === 0) {
        // for empty arrays reset returns FALSE
        // we have to switch the boolean result
        $result = !$result;
    for($i = 1; $i < $count; $i++) {
        if (next($array) === FALSE) {
            $result = FALSE;
    return $result;
lopezvit at gmail dot com
2 years ago
I think that maybe that is faster (I don't know why, because, at least in C, for loops are faster than while ones due to compile optimization) but what is sure is that, in case the list is empty, you are going to iterate over the loop at least one. And I'm sure that is not what you want to do. The correct way in this occassion is to use a normal while, not a do, while.
freefaler at gmail dot com
11 years ago
If you want to count only elements in the second level of 2D arrays.A close to mind note, useful for multidimentional arrays:

= array('fruits' => array('orange', 'banana', 'apple'),
'veggie' => array('carrot', 'collard','pea'));

// recursive count
echo count($food,COUNT_RECURSIVE);  // output 8

// normal count
echo count($food);                  // output 2

// all the fruits and veggies
echo (count($food,COUNT_RECURSIVE)-count($food,0)); //output 6
MaxTheDragon at home dot nl
2 years ago
If you wish to test if an array contains any elements (or is empty), you might tempted to use count to do something like this:

if (count($my_array) > 0) {
// array is not empty...

// or this ...

if (count($my_array) === 0) {
// array is empty...

Using the count function here is totally unnecessary and slower.

Instead, you should rely on the fact that empty arrays evaluate to false when cast to a boolean:

= (boolean) $my_array;

// or ...

$isEmpty = !$my_array;

// or in a conditional statement...

if ($my_array) {
// array is not empty...

Only use count if you need to know if an array contains a specific number of elements n (where n > 0).
nicolas dot grekas+php at gmail dot com
4 years ago
As of PHP 5.2.6, count() DOES detect infinite recursion.
It triggers a warning when its argument is a recursive array.
softontherocks at gmail dot com
1 year ago
I posted in my blog a small article talking about this function. If you want to visit it look at this url:
5 months ago
About 2d arrays, you have many way to count elements :

= array ( array(1,2,3),
'a','b','c','d') );

// All elements
echo count($MyArray ,COUNT_RECURSIVE);  // output 11 (9 values + 2 arrays)

// First level elements
echo count($MyArray );                  // output 4 (2 values+ 2 arrays)

// Both level values, but only values
echo(array_sum(array_map('count',$MyArray ))); //output 9 (9 values)

// Only second level values
echo (count($MyArray ,COUNT_RECURSIVE)-count($MyArray )); //output 7 ((all elements) - (first elements))
me at me dot com
2 years ago
To the poster above, the fastest way is to use 'do/while'. Try this way, you will find it faster than 'for'.
$arrayCount = count($array);
    // some code here
while($arrayCount > 0);
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