PHP - Manual: SplObjectStorage::count
2024-12-21
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::count — Returns the number of objects in the storage
$mode
= COUNT_NORMAL
): intCounts the number of objects in the storage.
mode
If the optional mode
parameter is set to
COUNT_RECURSIVE
(or 1), SplObjectStorage::count()
will recursively count the storage.
The number of objects in the storage.
示例 #1 SplObjectStorage::count() example
<?php
$s = new SplObjectStorage();
$o1 = new StdClass;
$o2 = new StdClass;
$s->attach($o1);
$s->attach($o2);
$s->attach($o1);
var_dump($s->count());
var_dump(count($s));
?>
以上例程的输出类似于:
int(2) int(2)
官方地址:https://www.php.net/manual/en/splobjectstorage.count.php