Countable::count

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

Countable::countCount elements of an object

Descrizione

public Countable::count(): int

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

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

The custom count as an int.

Nota:

The return value is cast to an int.

Esempi

Example #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";
}
?>

Il precedente esempio visualizzerà qualcosa simile a:

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