Php/docs/splobjectstorage.count

• PHP Manual
• SplObjectStorage
• Returns the number of objects in the storage

SplObjectStorage::count

(PHP 5 >= 5.1.0, PHP 7)

SplObjectStorage::count — Returns the number of objects in the storage

说明

public SplObjectStorage::count ( ) : int

Counts the number of objects in the storage.

参数

此函数没有参数。

返回值

The number of objects in the storage.

范例

Example #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)

参见

• SplObjectStorage::attach() - Adds an object in the storage
• SplObjectStorage::detach() - Removes an object from the storage