SplObjectStorage::offsetUnset

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplObjectStorage::offsetUnset — Removes an object from the storage

说明

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

Removes an object from the storage.

注意:
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

示例 #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

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