SplObjectStorage::attach()

(PHP 5 >= 5.1.0, PHP 7)

Adds an object in the storage

说明

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

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

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

参见

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