(PHP 5 >= 5.1.0)
Countable::count — Count elements of an object
$mode = COUNT_NORMAL
] )This method is executed when using the count() function on an object implementing Countable.
mode
The optional mode parameter will be set to
COUNT_NORMAL or COUNT_RECURSIVE, depending
on what value was passed to the second parameter of count().
This is particularly useful for counting all the elements of
a multidimensional array/Countable combination.
| Version | Beschreibung |
|---|---|
| 5.6 |
The optional mode parameter was added.
|
Beispiel #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";
}
?>
Das oben gezeigte Beispiel erzeugt eine ähnliche Ausgabe wie:
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