SplObjectStorage::offsetUnset

(PHP 5 >= 5.3.0)

SplObjectStorage::offsetUnset — Removes an object from the storage

说明

public void SplObjectStorage::offsetUnset ( object $object )

Removes an object from the storage.

Note:

SplObjectStorage::offsetUnset() is an alias of SplObjectStorage::detach() .

参数

object: The object to remove.

返回值

没有返回值。

范例

Example #1 SplObjectStorage::offsetUnset() example

  <?php
$o  = new  StdClass ;
 $s  = new  SplObjectStorage ();
 $s -> attach ( $o );
 var_dump ( count ( $s ));
 $s -> offsetUnset ( $o );  // Similar to unset($s[$o])
 var_dump ( count ( $s ));
 ?>

以上例程的输出类似于：

int(1)
int(0)

参见

SplObjectStorage::offsetGet() - Returns the data associated with an object
SplObjectStorage::offsetSet() - Associates data to an object in the storage
SplObjectStorage::offsetExists() - Checks whether an object exists in the storage