[edit] Last updated: Fri, 17 May 2013

SplObjectStorage::attach

(PHP 5 >= 5.1.0)

SplObjectStorage::attach — Adds an object in the storage

说明

public void SplObjectStorage::attach ( object $object [, mixed $data = NULL ] )

Adds an object inside the storage, and optionally associate it to some data.

参数

object: The object to add.
data: The data to associate with the object.

返回值

没有返回值。

范例

Example #1 SplObjectStorage::attach() example


<?php
$o1 = new StdClass;
$o2 = new StdClass;
$s = new SplObjectStorage();
$s->attach($o1); // similar to $s[$o1] = NULL;
$s->attach($o2, "hello"); // similar to $s[$o2] = "hello";

var_dump($s[$o1]);
var_dump($s[$o2]);

?>

以上例程的输出类似于：

NULL
string(5) "hello"

更新日志

版本	说明
5.3.0	Added the `data` parameter.

参见

SplObjectStorage::detach() - Removes an object from the storage
SplObjectStorage::offsetSet() - Associates data to an object in the storage

add a note User Contributed Notes SplObjectStorage::attach - [1 notes]

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rafal dot wrzeszcz at wrzasq dot pl ¶

1 day ago


Better way (imho) is to call:



$storage->removeAll($storage);



Especially, that sometimes (had no time to investigate) removeAllExcept(new SplObjectStorage()) leaves some elements.

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