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    Countable::count

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

    Countable::count — Count 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

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    User Contributed Notes 1 note

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    11
    SenseException
    10 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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