Countable::count

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

Countable::countCount elements of an object

Açıklama

public Countable::count(): int

This method is executed when using the count() function on an object implementing Countable.

Bağımsız Değişkenler

Bu işlevin bağımsız değişkeni yoktur.

Dönen Değerler

The custom count as an int.

Bilginize:

The return value is cast to an int.

Örnekler

Örnek 1 Countable::count() example

<?php
class myCounter implements Countable {
private
$count = 0;
public function
count() {
return ++
$this->count;
}
}

$counter = new myCounter;

for(
$i=0; $i<10; ++$i) {
echo
"I have been count()ed " . count($counter) . " times\n";
}
?>

Yukarıdaki örnek şuna benzer bir çıktı üretir:

I have been count()ed 1 times
I have been count()ed 2 times
I have been count()ed 3 times
I have been count()ed 4 times
I have been count()ed 5 times
I have been count()ed 6 times
I have been count()ed 7 times
I have been count()ed 8 times
I have been count()ed 9 times
I have been count()ed 10 times

add a note

User Contributed Notes 1 note

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13
SenseException
8 years ago
Even though Countable::count method is called when the object implementing Countable is used in count() function, the second parameter of count, $mode, has no influence to your class method.

$mode is not passed to  Countable::count:

<?php

class Foo implements Countable
{
    public function
count()
    {
       
var_dump(func_get_args());
        return
1;
    }
}

count(new Foo(), COUNT_RECURSIVE);

?>

var_dump output:

array(0) {
}
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