SplObjectStorage::count

(PHP 5 >= 5.1.0)

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

说明

public int SplObjectStorage::count ( void )

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