PHP Manual: Manipulation

public int Threaded::count()

Returns the number of properties for this object

This function has no parameters.

Example #1 Counting the properties of an object

<?php
$safe = new Threaded();

while (count($safe) < 10) {
    $safe[] = count($safe);
}

var_dump(count($safe));
?>

The above example will output:

int(10)