Php/docs/splobjectstorage.offsetunset

• PHP Manual
• SplObjectStorage
• Removes an object from the storage

SplObjectStorage::offsetUnset

(PHP 5 >= 5.3.0, PHP 7)

SplObjectStorage::offsetUnset — Removes an object from the storage

说明

public SplObjectStorage::offsetUnset ( object $object ) : void

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