Countable::count

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

Countable::countCount elements of an object

Опис

public Countable::count(): int

This method is executed when the value for count() is an object implementing Countable.

Параметри

У цієї функції немає параметрів.

Значення, що повертаються

The custom count as an int.

Приклади

Приклад #1 Countable::count() example

<?php

class Counter implements Countable
{
private
$count = 0;

public function
count(): int
{
return ++
$this->count;
}
}

$counter = new Counter;

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

?>

Поданий вище приклад виведе щось схоже на:

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