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(PHP 5 >= 5.1.0, PHP 7, PHP 8)
Countable::count — Count elements of an object
У цієї функції немає параметрів.
The custom count as an int.
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
